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Update (1930ET): It is being reported that the shooter has been found dead on the 33rd floor of the building. He died from a self-inflicted gun shot wound.

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An active shooter has been reported at 345 Park Avenue, the site of Blackstone’s headquarters as well as some offices belonging to the National Football League, an NYPD senior official told Bloomberg News.

According to social media report, the perpetrator is a a Middle Eastern man with a bulletproof vest is "running around with a A.R. 15 and shooting."

According to ABC, at least one civilian and one police officer have been shot, while Bloomberg reports that at least three people have been taken to a hospital, according to a fire department official. 

While news of the attack are still scarce, the Viral News NYC account reports that the suspect has shot himself.