'American Sniper' Chris Kyle Killing: 911 Call Released

The former Navy SEAL and author was fatally shot at a gun range.
2:17 | 02/06/13

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Transcript for 'American Sniper' Chris Kyle Killing: 911 Call Released
We have the latest on the shocking death of legendary american sniper and u.S. Navy He was gunned down at a texas shooting range, by a marine veteran he had been trying to help. Authorities released the 911 call made just after that shooting. And cecilia vega is here with the latest. Reporter: Good morning. These 911 tapes are really chilling. You can hear the suspect's sister rushing to get out of her house. She said her brother admitted to the shooting at the range. And she was terrified he might turn on her next. Listen. My brother just came by here. And he told me that he's committed a murder. Reporter: Laura blevins was terrified for her life. She says her brother, eddie routh, had showed up at her texas home saturday, and made a startling confession. He said that he killed two guys. They went to a shooting range. He's crazy. He's psychotic. Reporter: Police say the 25-year-old former marine snapped, turning his gun on two men at shooting practice with him. Men who had been trying to help counsel him. I don't know if he's going to come back here. Okay. I don't know if he's on drugs or not. Reporter: Investigators say routh shot point-blank former navy s.E.A.L. Sniper, chris kyle, and his friend, 35-year-old chad littlefield, then stole kyle's pickup truck. I'm going to stay on the phone with you until you get here, okay? That would be great. Reporter: Unsure of what routh planned to do next, his sister headed for the police department. Her husband took the phone. He was recently diagnosed with ptsd. Okay. And he's been acting a little weird. Just got out of a mental hospital last week. Reporter: Routh stands accused of taking the life of a war hero who was one of the country's most decorated snipers. Routh's family is convinced the same illness they say he was being treated for is also what caused him to snap. Now, that's not who he is. Reporter: Now, the alleged shooter remains in jail. A public memorial service is planned on monday for kyle at cowboy stadium, amy. Shows how much he was loved and revered by many. Looking at the latest on

This transcript has been automatically generated and may not be 100% accurate.

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