The Brief A man was shot and killed with an AR-15 in southeast Houston. Police say a group of friends were hanging out and handling the rifle. Police say the shooter shot the man in the chest. Houston police say a man in his 20s was shot and killed with an AR-15 while hanging out with a group of friends on Tuesday night. What they're saying:Police say no one reported hearing an argument before the shooting, and witnesses believe the shooting was an accident.