Police have released audio 911 tapes in the shooting death of Trayvon Martin, the unarmed teenager allegedly killed by a neighborhood watch captain while walking home from a store.
In eight chilling recordings, made the night of February 26, listeners can hear the frightened voices of neighbors calling to report screams for help, gunfire and then that someone was dead.
In perhaps the most disturbing of the recordings, a frightened voice cries out for help and pleads "No! No!" and then continues to wail.
And for the first time, we hear the voice of George Zimmerman, the neighborhood watch captain who admitted to police that he shot Martin, who was walking home from a convenience store to his father's home in the gated community. Zimmerman has not been arrested or charged in the shooting.