Multiple police officers in New York City were seen responding Monday to reports of an active shooter in a midtown Manhattan building that houses the Blackstone investment firm and the headquarters for the NFL. 

Sources told Fox News that people inside the building on 52nd Street and Park Avenue were hiding on different floors, the kitchen and bathrooms. 

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The NYPD responded Monday to reports of a shooting in midtown Manhattan. (Peter Gerber for Fox News Digital)

NYPD and Sheriff’s Department officers in protective gear were seen with guns drawn, Fox New York reported.

Video taken by a FOX 5 NY employee showed several officers carrying a person, and other officers appeared to be tending to a person lying on the ground.

The city’s emergency notification system told followers to expect traffic and mass transit disruptions. 

NYPD responds to active shooter reports in midtown Manhattan building (Peter Gerber for Fox News Digital)

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FBI Deputy Director Dan Bongino said that FBI New York Field Office management personnel and agents were responding to provide support at the active crime scene.