A man stalked through a Manhattan office tower firing a rifle Monday, killing four people, including a New York City police officer, and wounding a fifth before taking his own life, officials said. The shooting took place at a skyscraper that is home to the headquarters of both the NFL and Blackstone,

Officials say the suspect, identified as 27-year-old Shane Tamura, acted alone and died from an "apparent self-inflicted gunshot wound".

Follow along for live updates with the New York City shooting, where police investigate motive after five people, including the gunman, are killed in Monday shooting