The Latest: Philly police: Gunman had AR-15, handgun

Philadelphia's police commissioner says a gunman who barricaded himself in a rowhouse and exchanged gunfire with police for hours had a military-style AR-15 and a handgun.Richard Ross told reporters Thursday that police still do not have access to the crime scene because tear gas was used there, so he is not sure if there were other weapons.Philadelphia's top federal prosecutor says the shooting of six police officers during a 7 1/2-hour standoff was precipitated by a disrespect for law enforcem