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A gunman is suspected to have died after opening fire on a New York Police Department officer and at least two civilians near a corporate office in Manhattan, New York.
A man with a long rifle was seen walking into the building, according to one source.
Among those shot, one civilian is in critical condition, according to authorities. The other civilian and the NYPD officer, who suffered a gunshot wound to the back, are both expected to recover. The NYPD bomb squad is currently at the location.
The officer shot is from a Bronx precinct and was on a post near the building when the shooting unfolded, according to the official.
“Please take proper safety precautions if you are in vicinity and do not go outside if you are near Park Avenue and East 51st Street,” he wrote.
Law enforcement officers at the scene are being cautious and taking cover, a CNN field team on the ground saw.
Video shows heavy law enforcement presence around the building. The police department told CNN the scene is still “very active.”
The 634-foot (193m) high-rise at 345 Park Avenue houses offices for organizations like the National Football League and Blackstone. This building spans an entire city block and is one of 41 New York City buildings that have a unique zip code.
CNN has reached out to the NYPD for more information.