An active shooter incident occurred in Midtown Manhattan, New York, officials said. Here's what to know about 345 Park Ave.

The office building, located at 345 Park Avenue, houses some of the country’s top financial firms, including Blackstone, and the National Football League. According to the company's website, Blackstone stands as the world’s largest alternative asset manager, managing over $1 trillion in assets under management.

A shooter killed five people and injured six at 345 Park Avenue before taking his own life, via the New York Post. At least one of those killed was a police officer. Per the report, authorities expect the number of victims to rise as the 44-story building is searched in the aftermath of the incident.