Story highlights Dzhokhar Tsarnaev was seen on campus, at party after marathon bombings 
 
 Younger brother was found hiding in boat after manhunt 
 
 Authorities sought brothers after analyzing photos from scene 
 
 Older brother died in shootout, was run over by Tsarnaev, police say 
 
 As the world hunted him, the younger brother suspected in the Boston Marathon bombings acted like any other college sophomore. 
 
 Dzhokhar Tsarnaev, 19, was on the campus of University of Massachusetts-Dartmouth every day after the attack until late Thursday, a university official told CNN. Tsarnaev attended classes and dorm parties and went to the gym while the rest of Boston came to a tense standstill. 
 
 A student at the school told The Boston Globe that she saw Tsarnaev at a party Wednesday night that was attended by some of his friends from intramural soccer. 
 
 "He was just relaxed," she said, asking the paper not to print her name. 
 
 Another UMass Dartmouth student said he talked about the bombing with Tsarnaev for several minutes Tuesday while they were working out at the gym. Tsarnaev seemed normal, perhaps a little tired, Zach Bettencourt told CNN. 
 
 Bettencourt said he told Tsarnaev something about the bombing, to the effect of, "You hear about this kind of thing happening in Iraq and Afghanistan, but not here." 
 
 "He was like, 'Yeah, tragedies happen like this all the time and it's sad,' " Bettencourt said, adding he had no inkling about anything suspicious with Tsarnaev, whom he described as a nice guy. 
 
 The days-long drama that gripped Boston -- and the world -- began when two homemade bombs made from pressure cookers exploded 12 seconds apart near the finish line of Monday's Boston Marathon. Three people were killed, and more than 170 wounded as nails, ball bearings, BBs and shards of broken glass were blasted through the viewing area. 
 
 Photos: Photos: Manhunt for Boston bombers Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Boston bombing suspect Dzhokhar Tsarnaev is detained by officers on Friday, April 19. After a car chase and shootout with police, one suspect in the Boston Marathon bombing, Tamerlan Tsarnaev, was shot and killed by police early Friday, and his brother and second suspect, Dzhokhar Tsarnaev, was taken into custody Friday night. The two men are suspects in the bombings at the Boston Marathon on April 15, that killed three people and wounded at least 170. See all photography related to the Boston bombings. Hide Caption 1 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Special imaging techniques employed by Massachusetts State Police reveal Boston Marathon bombing suspect Dzhokhar Tsarnaev hiding in a boat in a backyard in Watertown on April 19. Hide Caption 2 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Dzhokhar Tsarnaev gets out of the boat he was hiding in outside of a home in Watertown, as seen in a surveillance video still. Hide Caption 3 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – An ambulance carries Boston Marathon bombing suspect Dzhokhar Tsarnaev, 19, from the scene after he was apprehended in Watertown, Massachusetts, on April 19. Hide Caption 4 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Police SWAT teams leave the area after apprehending the suspect in a yard where he was hiding in a dry-docked boat on April 19. Hide Caption 5 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Residents flee from an area where a suspect was hiding on Franklin Street on April 19. Hide Caption 6 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – SWAT team members run toward a police assault on a house as gunfire erupts on April 19. Hide Caption 7 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – People react while watching police respond to reported gunfire on April 19. Hide Caption 8 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – SWAT team members move down residential streets as they perform door-to-door searches in Watertown, Massachusetts, on April 19. Hide Caption 9 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A U.S. military helicopter lands behind Watertown Mall as law enforcement agencies continue to search for the 19-year-old bombing suspect on Friday. Hide Caption 10 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – SWAT teams prepare to enter a home as they continue the door-to-door search. Hide Caption 11 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – U.S. President Barack Obama meets with members of his national security team in the Situation Room of the White House on April 19 to discuss developments in the Boston bombings investigation. Hide Caption 12 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – SWAT team members line a residential street in Watertown, Massachusetts, as the manhunt continues on Friday. Hide Caption 13 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A man watches from the window of a home as a SWAT team member keeps watch on Friday, in Watertown, Massachusetts. Hide Caption 14 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Police to continue to the door-to-door search on Francis Street in Watertown, Massachusetts, on Friday. Hide Caption 15 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Law enforcement officers place themselves in an overhead position on Arsenal Street as the search continues on April 19. Hide Caption 16 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Law enforcement officers react to what was initially thought to be a threatening suspect on Arsenal Street on April 19. Hide Caption 17 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A police SWAT team searches houses on April 19 for the second suspect. Hide Caption 18 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – SWAT teams searches homes along Winsor Avenue in Watertown on April 19. Hide Caption 19 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A Massachusetts state trooper watches other troopers line up at Watertown Mall as the manhunt for the second suspect continues in Watertown on Friday. Hide Caption 20 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Police continue the ongoing manhunt for the second suspect on Williow Avenue in Watertown on Friday. Hide Caption 21 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A Watertown police vehicle with bullet holes in its body and a shattered windshield is towed out of the search area on April 19 in Watertown, Massachusetts. Hide Caption 22 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A Massachusetts State Police officer checks the bag of a cyclist amid heightened security on Friday in Watertown. Hide Caption 23 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Katia Costa looks out her window as police continue the manhunt on Nichols Avenue in Watertown on Friday. Hide Caption 24 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Ruslan Tsarni, uncle of the Boston terror suspects, told CNN affiliate WBZ that Tamerlan "got what he deserved" in an interview outside his home in Montgomery Village, Maryland, on Friday. Hide Caption 25 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A woman is questioned by Cambridge police and other law enforcement agencies Friday near the home of the second suspect in Cambridge, Massachusetts. A Massachusetts Institute of Technology campus police officer was shot and killed late Thursday night at the school's campus in Cambridge. A short time later, police reported exchanging gunfire with alleged carjackers in nearby Watertown. Hide Caption 26 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – SWAT teams move into position at the intersection of Nichols and Melendy avenues in Watertown, Massachusetts, on Friday. Hide Caption 27 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – SWAT teams gather at the intersection of Nichols and Melendy avenues in Watertown while searching for the remaining suspect on Friday. Hide Caption 28 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Onlookers take pictures while SWAT team members look around on Friday. Hide Caption 29 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Massachusetts Gov. Deval Patrick, left, speaks to the media at a shopping mall on the perimeter of a locked-down area during the search on Friday. Hide Caption 30 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Metro SWAT members hang off the back of a truck during the search on Friday. Hide Caption 31 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – SWAT officers check a door with guns ready on Friday. Hide Caption 32 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Officers patrol Watertown on Friday. Hide Caption 33 of 45 Photos: Photos: Manhunt for Boston bombers Photos: Manhunt for Boston bombers – The aftermath of the shootout that police said involved the two suspects in Watertown early Friday. Hide Caption 34 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Police with guns drawn search for a suspect on Friday in Watertown, Massachusetts. Hide Caption 35 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A police officer runs with his gun drawn on Friday. Hide Caption 36 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Boston Police gather in the parking lot in front of a Best Buy store near the Watertown Mall on Friday. Hide Caption 37 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Boston Police Commissioner Edward Davis speaks during a media briefing in the parking lot of the Watertown Mall on Friday. Hide Caption 38 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Boston police gather in front of a Best Buy on Friday. Hide Caption 39 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Police stop cars at School and Walnut streets on Friday. Hide Caption 40 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A Massachusetts state trooper checks a building along Mount Auburn Street as police search neighborhoods in Watertown. Hide Caption 41 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Police search neighborhoods yard by yard on Friday. Hide Caption 42 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Police convene on School and Walnut streets on Friday. Hide Caption 43 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – A police officer talks to a driver at a checkpoint in Watertown, Massachusetts. Hide Caption 44 of 45 Photos: Photos: Manhunt for Boston bombers Manhunt for Boston bombers – Police officers keep a man on the ground in Watertown on Friday. See all photography related to the Boston bombings. Hide Caption 45 of 45 
 
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 Law enforcement officials combed through photos and surveillance videos, searching for clues to who detonated the bombs. The FBI released photos showing two men they were seeking and asked for the public's help. 
 
 At the dorm where Tsarnaev lived, students joked Thursday as they viewed the FBI photos on television, a senior who lived in the suspect's dorm told The Boston Globe. 
 
 "We made a joke like, that could be Dzhokhar," said Pamala Rolon. "But then we thought it just couldn't be him. Dzhokhar? Never." 
 
 A tense scene began to unfold Thursday night -- complete with wailing sirens, flashes of blue and red lights, a hail of bullets and explosions from homemade bombs. By early Friday morning, Tsarnaev's older brother, Tamerlan, 26, was dead. Dzhokhar Tsarnaev was bleeding as he stole away into the night. 
 
 On campus nobody was joking. The school posted a message on its website: "UMass Dartmouth has learned that a person being sought in connection with the Boston Marathon bombing has been identified as a student registered at UMass Dartmouth. The campus is closed. Individuals on campus should shelter in place unless instructed otherwise." 
 
 The manhunt for Dzhokhar Tsarnaev lasted all day Friday and left Boston streets deserted as police asked everyone to stay indoors. Then after the request was lifted, authorities got a tip: A Watertown man told police someone was hiding in his boat in the backyard, bleeding. It was their suspect, Watertown police Chief Edward Deveau said. 
 
 Officers spotted Tsarnaev poking through the tarp covering the boat, and a shootout erupted, Deveau said. Police used "flash-bangs," devices meant to stun people with a loud noise, and negotiated with Tsarnaev for about half an hour. 
 
 "We used a robot to pull the tarp off the boat," David Procopio of the Massachusetts State Police said. "We were also watching him with a thermal imaging camera in our helicopter. He was weakened by blood loss -- injured last night, most likely." 
 
 A thermal image photograph, released Saturday by the state police, showed what authorities say was Tsarnaev lying in the middle of the boat. 
 
 Police had no idea whether he had weapons or explosives with him, so they repeatedly told him to stand up and lift his shirt to show he wasn't wearing a device, Deveau said. 
 
 Eventually Tsarnaev stood up and lifted his shirt for the officers. 
 
 "Once we saw that, we felt comfortable enough to send some officer tactical equipment to grab him and pull him away from the boat," Deveau said. He was taken by ambulance to a hospital. 
 
 Police are confident there are no other suspects, Deveau said. 
 
 "These two acted together and alone," he said. "As far as this little cell and this little group, I think we got our guys." ||||| DARTMOUTH — Dzhokhar Tsarnaev spent an apparently normal day Wednesday at the University of Massachusetts Dartmouth, where he was a sophomore, according to a school official, working out in the gym, then sleeping in his dorm room that night, while law enforcement officials frantically scanned photos trying to identify the men who planted deadly bombs at the Boston Marathon on Monday. 
 
 Card swipes told officials that Tsarnaev, described as a good and typical student who played intramural soccer, was on campus Wednesday, but it was not clear if he had been there earlier in the week. 
 
 A student, who did not want to be identified, also said she saw Tsarnaev at a party on Wednesday night that was attended by some of his soccer friends. 
 
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 “He was just relaxed,” she said. 
 
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 Tsarnaev, 19, was the subject of an intense manhunt until he was cornered and captured in a backyard in Watertown on Friday evening. His brother, Tamerlan Tsarnaev, 26, was killed early Friday morning in a shootout with police. 
 
 In a phone interview Friday morning, Pamala Rolon, 22, a UMass Dartmouth senior and a resident assistant at the Pine Dale Hall dorms, where Tsarnaev lived, said she has known him for a year and finds the notion that he played any role in the bombing incredible. 
 
 “He studied. He hung out with me and my friends,” she said. “I’m in shock.” 
 
 Dzhokhar Tsarnaev had done well academically in high school, but The New York Times reported that he was failing many of his courses at UMass Dartmouth. The Times said a school transcript showed seven failing grades over two semesters in 2012 and 2013, including Fs in Principles of Modern Chemistry, Intro American Politics, and Chemistry and the Environment. According to the transcript, Tsarnaev got a B in Critical Writing and a D and D-plus in two other courses. 
 
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 The UMass Dartmouth campus in the southeastern part of the state closed early Friday morning after school officials realized the younger of the two men authorities said were responsible for the Monday bombing was a student there. 
 
 The campus remained on lockdown throughout the day, with armed police blocking the main entrance. The shutdown was staggered — first the suspect’s dorm, and then the entire campus. Students living on campus were evacuated to Dartmouth High School. 
 
 On its website Friday, the school posted a stark message: “UMass Dartmouth has learned that a person being sought in connection with the Boston Marathon bombing has been identified as a student registered at UMass Dartmouth. The campus is closed. Individuals on campus should shelter in place unless instructed otherwise.” 
 
 During the lockdown, three black helicopters landed at the main entrance early in the afternoon, carrying about a dozen armed police officers who ran onto campus. Two U-Haul trucks arrived a short time later and drove onto campus; three U-Hauls had arrived earlier. Around 3:30 p.m., 11 State Police cruisers with lights flashing raced through the main campus entrance, followed by SUVs carrying personnel wearing military fatigues. 
 
 A handful of students milled about the front entrance, watching police come and go. 
 
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 Rolon said when she returned from class Thursday afternoon, she and her friends watched a television news broadcast showing the images of the suspects, including one she thought looked faintly like Tsarnaev. 
 
 “We made a joke like — that could be Dzhokhar,” she said. “But then we thought it just couldn’t be him. Dzhokhar? Never.” 
 
 Tsarnaev was quite studious, she said. He had not been seen on campus during the past two weeks, she said, but she did not think much about it because everyone was busy with tests and studying. 
 
 Rolon said she finds it impossible to believe he was involved in any zealous religious or political cause, or would turn to violence. 
 
 “I think he’s Muslim, but not so religious,” she said. “He’s a normal city kid.” 
 
 She also said that Tsarnaev, an ethnic Chechen who came to the United States with his family from Kyrgyzstan, a former Soviet republic in Central Asia, did not talk about Russian or international politics. 
 
 “He never said anything about Russia versus the United States,” she said. 
 
 She said Tsarnaev dressed typically in sweaters and jeans and fit in easily on campus. He spoke English with barely a trace of an accent. He had a roommate, she said, but she declined to give the student’s name. Rolon said she never met his family. 
 
 Chris Baratta, 22, a senior nursing student from Acton, lives across the street from campus. He played intramural soccer against Tsarnaev last year, but said nothing unusual stood out about him. 
 
 “You just sign up and make your own team, and whoever plays, plays,” he said. 
 
 He said friends of his smoked marijuana with Tsarnaev, but nothing stood out about the student. 
 
 Katie Horan, a sophomore at UMass Dartmouth who lives in Tsarnaev’s dorm, said the alarm went off around 7:45 a.m. telling everyone in the building to evacuate. 
 
 “What’s going on?” she said as the students emptied the building, unsure of why they had to leave. 
 
 She said two hours later, school officials announced a total campus evacuation; they learned officially that it was because a student was linked to the Marathon bombing. 
 
 Another student, Raja Nageswaran, 25, said Tsarnaev attended a gathering last fall at his home. No one who lived at the home had invited Tsarnaev and three friends who came to the gathering, he said. 
 
 “He was pretty social,” Nageswaran said. “He was pretty liked by most of the people.” 
 
 Nageswaran’s roommate, Emily DeInnocentis, 23, said Tsarnaev stood out to her because of some odd behavior, like spreading messy string cheese all over her couch, and picking up her cat and carrying it upstairs for no reason. 
 
 “We just didn’t invite him over after that. How many people just pick up your cat and go upstairs?” she said. 
 
 Globe Correspondent Zachary T. Sampson contributed to this report. Sarah Coffey can be reached at srmcoffey@yahoo.com . Patricia Wen can be reached at wen@globe.com . Matt Carroll can be reached at mcarroll@globe.com
– As the rest of the country tensely waited for word of who the Boston Marathon bomber or bombers might be, one of the suspects was having what appears to have been a very typical Wednesday. A school official at the University of Massachusetts Dartmouth, where Dzhokhar Tsarnaev was a sophomore who played intramural soccer, says the 19-year-old worked out at the gym and slept in his dorm room that night. Officials got the information about his whereabouts thanks to card swipes, the Boston Globe reports. (CNN says Tsarnaev was on campus every day after the attack, and even attended classes.) But before going to sleep, Tsarnaev apparently went to a party with some of his soccer buddies, according to a student who saw him there. "He was just relaxed," she says. Another student, who says she and her friends used to study and hang out with Tsarnaev, says he hadn't been around campus for the two weeks leading up to the bombing, but adds that she found his involvement in the attack hard to believe. But a third student says Tsarnaev acted oddly at a party he showed up to, uninvited, last fall, and says she and her roommates "didn't invite him over after that."