Background : Suspect lived at the same home where seven of the eight bodies were found . Christopher Speight , 19 , wearing bulletproof vest when he turned himself in , sheriff says . Police say suspect shot and hit helicopter , which required emergency landing .
NEW : Suspect lived at the Appomattox home where seven of the eight victims were found . Christopher Speight , 39 , wearing bulletproof vest when he turned himself in , sheriff says . Police say suspect shot and hit helicopter , which made emergency landing .