A man who shot a person during an argument early Monday in a Texas backyard was chased down and beaten to death with bricks, police say.

Fort Worth police said officers are investigating an incident that occurred shortly before 1 a.m. Officers who first responded to the shooting found two people dead and several wounded from gunshots.

According to police, the violence began during a small gathering in a backyard where a man became upset with other attendees. The man reportedly left the party and returned soon after armed with a gun. He then got into an argument with multiple people and opened fire, injuring one person.

The gunman was then chased away by people attending the party and began shooting at the group as others threw landscaping bricks at him, police said. At least two people were shot before the man was stopped and “struck multiple times with at least one landscaping brick,” police said.

The gunman and a person who had been shot were pronounced dead at the scene. Three other people were hospitalized with injuries that were not life-threatening.