Despite Mandalay Bay shooter Stephen Paddock’s well-documented gambling history, he had no known gambling debts, Sheriff Joe Lombardo said in an extensive interview Tuesday with the Las Vegas Review-Journal. 
 
 Clark County Sheriff Joe Lombardo discusses the Route 91 Harvest festival mass shooting during an exclusive interview with the Las Vegas Review-Journal Tuesday, Oct. 10, 2017. K.M. Cannon/Las Vegas Review-Journal @KMCannonPhoto 
 
 Stephen Paddock (courtesy) 
 
 Clark County Sheriff Joe Lombardo discusses the Route 91 Harvest festival shooting during an interview with the Las Vegas Review-Journal on Tuesday, Oct. 10, 2017. K.M. Cannon/Las Vegas Review-Journal @KMCannonPhoto 
 
 Clark County Sheriff Joe Lombardo discusses the Route 91 Harvest festival shooting during an interview with the Las Vegas Review-Journal on Tuesday, Oct. 10, 2017. K.M. Cannon/Las Vegas Review-Journal @KMCannonPhoto 
 
 Clark County Sheriff Joe Lombardo discusses the Route 91 Harvest festival shooting during an interview with the Las Vegas Review-Journal on Tuesday, Oct. 10, 2017. K.M. Cannon/Las Vegas Review-Journal @KMCannonPhoto 
 
 Despite Mandalay Bay shooter Stephen Paddock’s history of high-stakes gambling, he had no known gambling debts, Clark County Sheriff Joe Lombardo said Tuesday. 
 
 And, contrary to published reports, Paddock’s girlfriend, Marilou Danley, told investigators in Los Angeles she had no concerns about his mental health. 
 
 In an extensive interview Tuesday with the Las Vegas Review-Journal, Lombardo clarified those details and provided new information about the Oct. 1 shooting that killed 58 concertgoers and left nearly 500 injured. 
 
 The sheriff said investigators have made contact with Paddock’s entire “family tree,” including the shooter’s two ex-wives. Their conversations have shed new light on the shooter’s upbringing but have yet to answer the most daunting question: Why? 
 
 “We may never know,” Lombardo said. “All those things that you would expect to find, we have not found.” 
 
 He said investigators are making progress each day. 
 
 Paddock, a video poker player, checked in to Mandalay Bay on Sept. 25 — three days earlier than initially reported. 
 
 Lombardo said Paddock spent those first three days in a separate room, and the hotel provided that room free of charge for unknown reasons. Paddock spent the remaining days in the corner suite where he staged his attack, and he paid for the suite himself. 
 
 “We’ve learned that there’s a difference of comp days versus personal pay days,” Lombardo said. “We were going off the personal pay days.” 
 
 While investigators continue to comb through Paddock’s corner suite, nothing significant was collected from the first room, the sheriff said. 
 
 Though Paddock checked in about a week before the shooting occurred, he did not remain in Las Vegas. Authorities believe he traveled to Mesquite several times in the days leading up to Oct. 1. 
 
 Throughout his time in Las Vegas, Paddock did not interact with many people, the sheriff said, dispelling rumors the shooter had met with a prostitute for at least one night. 
 
 Bellman helped with bags 
 
 On at least two occasions, a bellman helped Paddock bring bags up to his 32nd-floor suite. After poring over surveillance footage, authorities have yet to spot any red flags about Paddock’s actions leading up to Oct. 1 that may have signaled his planned ambush. 
 
 Lombardo also said he was not aware of any video footage that may have shown Paddock driving into the desert near Mesquite to practice shooting his rifles, contrary to reports. 
 
 Doctors have begun Paddock’s autopsy, and as of Tuesday, an examination of his brain revealed no abnormalities, the sheriff said. He did not have any information about Paddock’s toxicology results. 
 
 The Review-Journal first reported last week that Dr. Steven Winkler of Henderson had prescribed Paddock an anti-anxiety drug in June. Lombardo said the investigation has not identified any other physicians who have treated Paddock. 
 
 The night of the shooting, there were 51 Metropolitan Police Department officers working overtime to staff the Route 91 Harvest festival. When the volleys of gunfire began hitting the crowd, those officers formed several strike teams to find and take down the suspect. 
 
 But in the first hour after shots began, the echoes of gunfire created confusion, leading to false reports of gunshots at multiple Strip locations, Lombardo said. Medics were also dispatched to several different locations because some gunshot victims were able to run from the festival to different Strip properties, then call for help. 
 
 Before Paddock sprayed bullets into the crowd, Paddock opened fire down the hallway of the 32nd floor, injuring Mandalay Bay security guard Jesus Campos. The guard, who was not armed, was on the floor responding to a door left ajar when he heard the sound of drilling coming from Paddock’s room. 
 
 The guard was shot in the thigh, and though Paddock fired more than 200 rounds down the hall and into nearby rooms, no one else in the hotel was injured. 
 
 After the guard was shot, the guard radioed Mandalay Bay security, who then reported the shooting to police. The sheriff was cautious about giving an exact timeline, but he commended hotel staff for their response. 
 
 ‘Everybody did a fantastic job’ 
 
 “You’re never going to get me to say that somebody dropped the ball,” the sheriff said. “I don’t believe that happened. I think everybody did a fantastic job.” 
 
 After Campos was hit, he took cover in an alcove in the hallway, warning a maintenance man to take cover. The guard stayed in hiding until police arrived on the floor in an elevator, Lombardo said. 
 
 Police who responded evacuated rooms before entering Paddock’s suite, where he had killed himself. 
 
 As the investigation continues, the sheriff thanked the FBI for helping relieve local law enforcement resources, allowing them to focus on other crimes. 
 
 He also said, as part of ongoing hotel security re-evaluations, guards could begin accompanying housekeeping into rooms with views of special event venues. 
 
 Lombardo added that both Danley and the shooter’s brother, Eric Paddock, have not been cleared of wrongdoing by investigators. 
 
 He expects to release more information Friday. 
 
 Contact Rachel Crosby at rcrosby@reviewjournal.com or 702-380-8135. Follow @rachelacrosby on Twitter. ||||| Authorities have revised the timeline for last week’s mass shooting in Las Vegas, raising new questions about the hotel’s response to an attack that killed 58 people and injured several hundred more. 
 
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 The sheriff’s office initially said that Stephen Paddock’s rampage was brought to an end when security guard Jesus Campos arrived on the 32nd floor to check on a door alarm to discover the shooting in progress. 
 
 Federal agents told ABC News, however, the FBI has known for several days that the Sheriff Joseph Lombardo, chief of the Las Vegas Metropolitan Police Department, was providing inaccurate information to the public about the sequence of events inside the Mandalay Bay hotel. 
 
 Lombardo acknowledged on Monday, under pressure from the FBI, that Campos reported that he had been shot at least six minutes before the rampage began. 
 
 “What we have learned is Mr. Campos was encountered by the suspect prior to his shooting to the outside world,�? Lombardo said in a press conference. 
 
 According to Brad Garrett, a former FBI agent and ABC News consultant, the change is significant. If the hotel knew there was an active shooter on the 32nd floor six minutes before the rampage began, Garrett says, it raises the question of whether they could have done more to stop him. 
 
 “And those six minutes, you may not have been able to get the police there, but you may have been able to create a disruption of some sort that would have kept him from doing what he ultimately did,�? Garrett said. 
 
 Officials briefed on the investigation have also told ABC News that Paddock used the hotel’s service elevator in the days leading up to the attack. Access to the service elevator, sources say, was a perk for high-rollers. 
 
 In an interview with KNPR, Undersheriff Kevin McMahill said that a number of items, including gas masks, found in Paddock’s hotel room suggest to investigators that Paddock planned to escape the hotel. 
 
 On Tuesday, deputy sheriff Tom Roberts told ABC’s local affiliate station KTNV the hotel did the best it could. 
 
 “You have that human factor where it goes to a person and they end up loggin’ into a computer, then they make a call to dispatch – at the same time he may have already started firing outside,�? Roberts said. 
 
 The owner of the Mandalay Hotel, MGM, would not answer questions from ABC News. ||||| The companion of the Las Vegas shooter, Stephen Paddock, has been put on a U.S. government watch list as the FBI continues to press her for information about the worst mass shooting in modern American history, federal law enforcement officials told ABC News. 
 
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 Marilou Danley has been designated a Transportation Security Administration selectee, meaning authorities will be notified if she attempts to board any commercial flight. 
 
 The travel designation will require her to undergo extra screening and will notify authorities if she tries to leave the country on a commercial flight, two law enforcement sources told ABC News. 
 
 At this stage of the investigation, officials believe that Danley played no part in — and had no knowledge of — her now deceased boyfriend's plan to open fire on concertgoers from the Mandalay Bay hotel last week, killing 58 people and injuring more than 500 others before killing himself. 
 
 On Friday, Matthew Lombard, her attorney, told reporters that she continues to cooperate with authorities. 
 
 Investigators believe that Danley's relationship with Paddock changed over time, evolving from intimate companion, authorities said, to more of a caretaker for him. 
 
 "I knew Stephen Paddock as a kind, caring, quiet man," Danley said in a statement read by her attorney last week. "I loved him and hoped for a quiet future together with him." 
 
 She added that she feared, when Paddock bought her a plane ticket to the Philippines and wired her a significant sum of money, that it "was a way of breaking up" with her. 
 
 The travel designation, secondary security screening selectee, will appear on her boarding pass at the airport and indicates authorities want to be alerted if Danley, a Philippine native who travels under an Australian passport, makes any effort to travel out of the region or out of the country on a commercial flight. 
 
 The designation also gives TSA officers the authority to more aggressively search her luggage. 
 
 Officials with the Department of Homeland Security did not respond Monday to questions about Danley's travel status. ||||| UPDATE: MGM, the owner of Mandalay Bay, issued a statement after this report aired saying they "cannot be certain about the most recent timeline that has been communicated publicly, and we believe what is currently being expressed may not be accurate." 
 
 "This remains an ongoing investigation with a lot of moving parts," the statement said. "As evidenced by law enforcement briefings over the past week, many facts are still unverified and continue to change as events are under review." 
 
 LAS VEGAS -- Law enforcement tells CBS News they're getting "a very good response" to billboards asking the public for help, but as the investigation continues, there is growing confusion about the security guard who was shot by Stephen Paddock and what happened next. 
 
 Tuesday on Nevada public radio, Undersheriff Kevin McMahill tried to clarify the shift in timeline provided by police, but only raised more questions when he said that a maintenance worker was also on the 32nd floor when Stephen Paddock fired the first shots. 
 
 "As the maintenance man as well is arriving in the hallway, they have some communication and they are just riddled with hundreds of bullets at this particular point," McMahill said. "We now know that he then went over and began shooting into the crowd." 
 
 McMahill wouldn't talk on camera, but discussed response time by hotel security and police. 
 
 "I can tell you that first responder resources were on the scene very, very quickly," McMahill said. 
 
 And officials also now say Paddock checked into Mandalay Bay three days earlier than originally thought. 
 
 Just last Friday, McMahill hailed the guard, Jesus Campos, as a hero for interrupting the shooter several minutes into the attack, saying the guard was a "brave and remarkable man." 
 
 "We believe that he [Paddock] was shooting into the crowd and then the security officer was shot during that event," McMahill said Friday. 
 
 Investigators tell CBS News they visited this shooting range just outside Mesquite, Nevada, believing Paddock may have taken target practice two days before he carried out his attack in Las Vegas. 
 
 Police say Stephen Paddock (inset) opened fire through two windows on the 32nd floor of the Mandalay Bay Resort and Casino in Las Vegas, Oct. 1, 2017. CBS News/AP 
 
 Law enforcement sources also tell CBS News that Paddock may have used a freight elevator at Mandalay Bay before the shooting. 
 
 "He could have very easily been thought to have been that conventioneer, news media -- anything of that sort," said Las Vegas security consultant Tommy Burns. 
 
 CBS News contacted MGM, which owns Mandalay Bay, and they have declined to comment. Security experts say most guards do not carry guns in the casino but carry radios for quick contact with hotel management in an emergency.
– "We may never know" why Stephen Paddock fired on a Las Vegas crowd, killing 58 and injuring hundreds, says Clark County Sheriff Joe Lombardo. Lombardo tells the Las Vegas Review-Journal that interviews with Paddock's girlfriend, Marilou Danley, and entire "family tree," including two ex-wives, have yet to reveal a motive for the shooting. "All those things that you would expect to find, we have not found," Lombardo says. For example, Paddock, a video poker player, had no known gambling debts; an autopsy has revealed no brain abnormalities; and Danley has said she had no concerns about Paddock's mental health, Lombardo says. More: The ongoing investigation has, however, prompted another revision to the shooting timeline, which "could change even more," Lombardo says. According to Lombardo, Paddock checked into a free-of-charge room at Mandalay Bay on Sept. 25, three days earlier than previously known. After three days, he moved to a corner suite he paid for on the 32nd floor from which he would carry out the shooting. The new revelation that a guard encountered Paddock before his shooting spree raises the fundamental question of why it took so long to stop him, observes the LA Times. Police say the guard made it to a hallway phone to call hotel security after being shot, but they're not sure how long that took; Paddock shot an estimated 200 rounds into the hallway. And a rep for Mandalay Bay owner MGM Resorts sounded a bit defensive: "We cannot be certain about the most recent timeline that has been communicated publicly, and we believe what is currently being expressed may not be accurate.” It's believed Paddock visited Mesquite, Nev., several times before Oct. 1. But though CBS News reports Paddock might've visited a shooting range there, Lombardo says he's unaware of videos rumored to show Paddock performing shooting drills. Lombardo also dispels rumors that Paddock met with a prostitute. While authorities still don't think Danley was involved in Paddock's plans, ABC News reports she's been added to a federal travel watch list. Her designation as a TSA "selectee" means that if she tries to board a plane or exit US borders, she'll be subjected to extra screening and authorities will get a heads-up. ABC News has another tidbit by way of sources: That as a perk due to his casino spending, Paddock was given access to the hotel's service elevator.