At some point, Campbell handed Halinski a handgun and told her it was unloaded and the safety was on. He told her to point the gun toward him and said "shoot me." Thinking the handgun was empty, Halinski pulled the trigger.
Neighbors said they were not surprised, that Campbell had set up a shooting range in his basement and that at times he practiced shooting targets from his basement bed.
Police seized multiple guns as well as several pipe bombs from the house.
Halinski was charged with involuntary manslaughter.