Multiple casualties as gunman opened fire in the lobby of the midtown Manhattan building on Park Avenue that is home to the Blackstone investment firm and other corporations before moving to other floors.

A New York City police officer and three other people were shot and killed inside a Midtown Manhattan office building on Monday evening by a gunman armed with a high-powered rifle, police confirmed.The suspect,

Blackstone employee Wesley LePatner was also killed, the company said in a statement. She was the global head of Core+ Real Estate and the chief executive officer of Blackstone Real Estate Income Trust.