Police have released the 911 tapes recorded the night that 17-year-old Trayvon Martin was shot in a Sanford, Florida neighborhood.
One of the recordings is a 911 call placed by George Zimmerman, the neighborhood watch captain who admitted to police that he shot Martin, who was reportedly walking back from a convenience store to his father's home in the gated community on February 26.
"This guy looks like he's up to no good, or he's on drugs or something," Zimmerman told the 911 operator. "He's just staring, looking at all the houses."
At one point, Zimmerman told the operator that he was following him as he ran away.
"We don't need you to do that," the dispatcher told Zimmerman.
One of the calls includes a chilling recording of panicked cries for help just before Martin was shot and killed.
"Help!" can be heard on the recording followed by a single gun shot. The screaming then stops.
"You hear a shot, a clear shot, that we can only assume is a warning shot," said Natalie Jackson, a family attorney, according to the Huffington Post. "Then a 17-year-old boy is begging for his life. Everything tells me that that was Trayvon Martin."
In a move that is causing controversy, Sanford police have not charged Zimmerman, who admitted to shooting the unarmed teen, though the case is still under investigation.
Prior to the shooting, Zimmerman had been the source of complaints by his neighbors over his volunteer watchmen tactics.