Four people killed, including officer, in Manhattan shooting with gunman dead

Four people, including an off-duty police officer, were fatally shot and one person was injured after a lone shooter opened fire in a midtown Manhattan skyscraper Monday evening, according to police.

Surveillance footage showed the gunman, armed with a rifle, walking into a skyscraper that houses the headquarters for Blackstone and the NFL. The suspect, identified as Shane Tamura, a 27-year-old man from Las Vegas, died of an apparent self-inflicted gunshot wound, New York City Police Department Commissioner Jessica Tisch said before holding a press conference.