New York City police detectives searched a studio apartment in Las Vegas that belonged to the suspected gunman in Monday's mass shooting at a Midtown Manhattan.

The New York City Police Department sent detectives to Las Vegas to work with the Bureau of Alcohol, Tobacco and Firearms to execute search warrants and continue the investigation into Monday's deadly shooting inside a Midtown Manhattan office building.

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.