Trayvon Martin's family says EMS recordings prove George Zimmerman wasn’t hurt Recordings show second ambulance called for Zimmerman was cancelled 
 
 Slain Florida teen Trayvon Martin’s family has intensified calls for George Zimmerman's arrest, saying newly released emergency responder records prove Zimmerman wasn’t hurt the night he shot the 17-year-old, as he has claimed. 
 
 Last week, The Daily News obtained EMS documents from the night of the fatal encounter that showed a second ambulance called to ferry Zimmerman to the hospital after the shooting was canceled. 
 
 On an audiotape obtained by The News, rescue workers could be heard discussing Zimmerman’s condition. 
 
 “Do they have a second patient?” a man asks. 
 
 “That’s affirmative. There is a second patient,” a woman replies. 
 
 LISTEN TO EMS AUDIO BELOW 
 
 Moments later, a man says, “You can cancel the second rescue,” adding that Zimmerman had not been shot. 
 
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 An unidentified spokesman for the family told local station WKMG that there was “not a chance” the ambulance would have been canceled if Martin had beaten Zimmerman in a life-or-death struggle, as Zimmerman’s camp has claimed. 
 
 Zimmerman’s family said Martin repeatedly bashed Zimmerman’s head against the ground and broke his nose. 
 
 The spokesman told WKMG that it was “embarrassing” that Zimmerman had not been arrested. 
 
 The Daily News shared the EMS recordings with WKMG. 
 
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 The EMS communications were the latest pieces of evidence to call into question Zimmerman’s self-defense claim. 
 
 Last week, the funeral director who examined Martin's body said he found no signs of a violent brawl, one day after police station footage showed Zimmerman without any apparent injuries or bloodstains. 
 
 On Sunday, two forensic voice identification experts told the Orlando Sentinel that it was not Zimmerman who was heard crying for help on recordings of 911 calls made by neighbors. ||||| Enhanced video footage of George Zimmerman about 30 minutes after he shot Florida teenager Trayvon Martin shows little evidence of a broken nose, the president of the Florida College of Emergency Physicians said today. 
 
 But the video does show what could be an injury to the back of Zimmerman's head. 
 
 The never-before-seen evidence of an injury to Zimmerman, in this case a gash or mark to his head, would appear to back his claim that he was in an altercation with Martin on the night of Feb. 26 in Sanford, Fla. Zimmerman says he shot the teen in self defense after he was attacked. 
 
 Zimmerman, 28, claims Martin, 17, punched him in the nose, knocked him down and repeatedly slammed his head into the ground. 
 
 The police surveillance video, first obtained exclusively by ABC News last month and clarified by Forensic Protection, Inc., shows Zimmerman exiting the police cruiser with his hands cuffed behind his back. Zimmerman is frisked and then led down a series of hallways, still cuffed. At one point, one of the officers stops to look briefly at the back of Zimmerman's head. 
 
 There was no obvious sign of any injury to Zimmerman's head or face on the video until it was enhanced. 
 
 But Dr. Vidor Friedman, president of the Florida College of Emergency Physicians, remains unconvinced. 
 
 "If somebody had been beating his head against concrete I'd think we'd see more obvious scrapes," Friedman said. He also said he would expect to see bandages on Zimmerman's head. 
 
 More significantly for Friedman was the condition of Zimmerman's nose. 
 
 "All of the ridges in his nose are clearly defined. You would expect significant swelling in the hour or two after a break. There appears to be none. It doesn't look like his nose was broken or badly broken," Friedman said. 
 
 Police Video Surveillance of George Zimmerman 
 
 The initial police report noted that Zimmerman was bleeding from the back of the head and nose, and his lawyer later claimed that Zimmeran suffered a broken nose. After receiving medical attention at the scene of the shooting, it was decided that he was in good enough condition to travel in a police cruiser to the Sanford, Fla., police station for questioning. He did not check into the emergency room following the police questioning. 
 
 The surveillance tape of Zimmerman, later released by the Sanford Police Department, could be used as evidence if Zimmerman is brought up on charges, sources tell ABC News. 
 
 Zimmerman's lawyer, Craig Sonner, has said his client felt "one of them was going to die that night," when he pulled the trigger. 
 
 The case has gained national prominence with rallies across the country demanding that Zimmerman be arrested and charged with murder. 
 
 Lawyers for Martin's family sent a letter to the Justice Department today asking that the federal probe into the killing look into the fact that Sanford Police Chief Bill Lee met with State Attorney Norm Wolfinger on the night of shooting. Lawyer Benjamin Crump also claims in the letter that members of Zimmerman's family were also present in the police station that night. 
 
 The lead homicide investigator, Chris Serino, wrote in an affidavit that he recommended manslaughter charges be brougth against Zimmerman but was advised by the prosecutor not to file charges because there was not enough evidence for a conviction, sources have told ABC News. 
 
 "We look forward to your thorough and comprehensive review of the suspicious circumstances surrounding this meeting," Crump wrote. 
 
 A Justice Department spokesman said the agency will review the Martin family letter. 
 
 State prosecutors are expected to go before a Seminole County grand jury on April 10 to determine what, if any, files should be charged. 
 
 An analysis of a 911 call done over the weekend by the Orlando Sentinel determined that screams for help overhead on a 911 came from Martin, although Zimmerman's family insist they recognize his voice in the screams. 
 
 Two evidence experts consulted by the Sentinel found the voice heard in a 911 call placed by a woman in a home near where the shooting occurred was only a 48 percent match to Zimmerman's voice. One of the experts, Tom Owen, told the Sentinel to reach a positive match he would expect higher than 90 percent. 
 
 "As a result of that, you can say with reasonable scientific certainty that it's not Zimmerman," Owen told the paper. 
 
 Owen,the chair emeritus at the American Board of Record Evidence, was not able to determine if the voice was that of Martin, the Sentinel reports, because he did not have audio of the teen's voice to compare to the shouts for help in the 911 call.
– The battle continues over what injuries killer George Zimmerman may or may not have suffered in a confrontation with 17-year-old Trayvon Martin. New information reveals that an ambulance ready to be dispatched to treat Zimmerman the night of the killing was canceled, raising doubts that Zimmerman was badly beaten by Martin, as he has said. The latest information follows the appearance of possible wounds on Zimmerman's head in enhanced scenes of a video taken at a police station the night of the killing. ABC had reported earlier that there were no signs of injury. A new expert, however, is saying there is no indication that Zimmerman's nose was broken, even though he said Trayvon punched him in the face—and slammed his head into concrete. Any injuries were apparently not severe enough for a paramedic to check out, notes CBS. One ambulance on the scene was dealing with Martin. In recordings of conversation between police and an ambulance dispatcher, one person is heard asking: "Do they have a second patient?" Another answers: "That's affirmative, there's a second patient." But a rescue worker responds: "You can cancel the second rescue." Zimmerman's injuries could be critical to his defense that he killed Trayvon because he thought his life was in danger. Trayvon's family said injuries suffered in such a confrontation would require medical help.