Exclusive video shows SWAT teams executing a search warrant at the Las Vegas apartment of Shane Tamura, the man behind Monday's deadly shooting in New York City that left four people dead.

A man carrying a rifle killed four people at a New York City office tower Monday, including an off-duty New York City police officer, and wounded a fifth before taking his own life

Detectives searched the studio apartment of 27-year-old Shane Tamura, who shot five people on Monday before killing himself, in Las Vegas and found 100 9mm rounds, a tripod for the rifle used in the shooting, and an empty hand box for a revolver, police said Wednesday, according to The Hill.