911 tapes released in Watch killing

SANFORD, Fla., March 17 (UPI) -- Police in Sanford, Fla., have released 911 tapes from the night an unarmed teenager was shot and killed by a Neighborhood Watch volunteer.

Investigators say they do not have probable cause to arrest the shooter, George Zimmerman, 28, ABC News reported Friday. Zimmerman says he fired at Trayvon Martin, 17, in self-defense.

Martin's family spent 2 hours Friday listening to the tapes, which were then released to the media, the Orlando Sentinel reported.

Ryan Julison, a spokesman for the family, said Trayvon's mother, Sybrina Fulton, broke down and left the room at one point, ABC said.

"He killed my son," Julison quoted Trayvon's father, Tracy Martin, as saying. "He couldn't control himself."

Trayvon was walking to his father's girlfriend's house Feb. 26, his family says. On the tapes, Zimmerman tells a dispatcher he spotted a suspicious person who "looks like he's up to no good, or he's on drugs or something."

Zimmerman apparently followed Martin on foot, although the dispatcher told him "you don't need to do that."

"These [expletive] always get away," he adds.

Witnesses said at some point the two got into a physical fight, which ended with Zimmerman shooting Trayvon.