Four people including a police officer have been killed in a shooting near a corporate office building in New York’s Manhattan.
A man with a long rifle was seen walking into the building, according to one source.
CNN obtained a photo shared by law enforcement of the suspected shooter walking into the Park Avenue building.
He appeared to carry a rifle and wore dark glasses.
He was found dead in the building with a suspected self-inflicted wound, CNN reported.
It was previously reported that a police officer and at least two civilians had been shot, with one civilian critically wounded.
The police officer, who was shot in the back, has since died, CNN reported, citing an unnamed law enforcement official.
The officer was from a Bronx precinct and was on a post near the building when the shooting unfolded, according to an official.
The suspect has been reportedly tentatively identified as a 27-year-old man from Las Vegas.
He had a concealed carry licence for a handgun and an expired private investigator’s licence, law enforcement sources told CNN.
“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) skyscraper, located at 345 Park Avenue, includes corporate offices for the National Football League and Blackstone. The building occupies an entire city block and is one of 41 New York City buildings with its own zip code.
CNN has reached out to the NYPD for more information.