What we know about Tamura’s life, how he got the assault rifle that he used to kill an NYPD officer and three others, and the timeline of the shooting, which ended with Tamura firing a fatal

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.

A Nevada man recently traveled to New York City, entered a Manhattan building wearing body armor, carrying an M4 rifle, and fatally shot four people Monday evening, including a New York Police Department officer and injured another,