Bethea was fatally shot in the head May 17 when gunfire erupted as she danced with friends outside the Redfern Houses in Far Rockaway. Bethea's family had moved from there to Jamaica, Queens, shortly after her best friend was killed by a stray bullet.
The suspect in Bethea's killing is being held on charges of second-degree murder, manslaughter and criminal possession of a weapon.
Kelly says police are still searching for a second man in the slaying.
