CNN Anderson Cooper 360 March 17, 2015 00:33:00
Felt some dispute. we're not sure we completely buy that part of it. >> reporter: the prosecutor says investigators are still trying to interview witnesses and learn more about the altercation which led to the shots being fired. bishop robinson also accuses law enforcement officials of mistreating williams since he was arrested saturday night. >> he was brutally beaten by the police and he was sore still had bruises all around his neck his back and his entire body. and also was denied medical attention. and also he was placed in isolation. >> reporter: the st. louis county police department ca...