A shooting Monday at an office building in New York City that is home to the Blackstone investment firm and the NFL left four people dead, including an NYPD officer.

Officials said the gunman fatally shot himself after his attack, which set off a chaotic scene that rippled out into the heart of Manhattan during rush hour.

The 27-year-old gunman fired indiscriminately throughout the building’s lobby and 33rd floor, killing Islam, security guard Aland Etienne, Blackstone executive Wesley LePatner and Rudin Management associate Julia Hyman, before turning the gun on himself.