A suspect accused of killing a Laclede County man at his home back in July is now facing a second count of first degree murder. Matthew Rumbaugh of Mountain Grove has now been formally charged with not only shooting and killing Chad Gerber, but also killing his teenage son riley. The teenager was found in a bedroom with two gunshot wounds to the head and was taken to an area hospital where he later died. Chad Gerber was pronounced dead at the scene. Rumbaugh is now facing two counts of first degree murder and two counts of armed criminal action and is being held without bond.