NEW YORK (AP) — A shooting at a midtown Manhattan office building on Monday left at least five people dead, including an off-duty New York City police officer, sources told the The Associated Press.

The suspect was identified as Shane Tamura, of Nevada, two people briefed on the investigation told the AP. Sources said he fatally shot himself.

Law enforcement officials located identification on Tamura’s body, including a concealed carry permit from Las Vegas, the people said. The people were not authorized to discuss details of an ongoing investigation and spoke to the AP on condition of anonymity.

The Fire Department of New York said emergency crews were called to the Park Avenue office building Monday evening for a report of someone shot. The building houses some of the country’s top financial firms and the National Football League. A spokesperson said the call came in around 6:30 p.m. but provided no other details.

Mayor Eric Adams said multiple people were injured. He posted a clip to social media urging people still inside the office building to stay put because police officers were conducting a floor-by-floor search. The Democrat said he’s headed to the hospital to speak with the family and loved ones of those involved.

Local TV footage showed lines of people evacuating the office building with their hands above their heads. The building includes offices of Blackstone and the consulate general of Ireland.

Some finance workers at an office building down the block were picking up dinner at a corner eatery when they heard a loud noise and saw people running.

“It was like a crowd panic,” said Anna Smith, who joined the workers pouring back into the finance office building. They remained there for about two hours before being told they could leave.

The building where the shooting happened is in a busy area of midtown, located a short walk north from Grand Central Terminal and about a block east of St. Patrick’s Cathedral.

The city’s emergency management alert system warned of traffic delays, road closures and disruptions to public transportation in the area.

Associated Press writer Mike Balsamo contributed from New York.

This story has been updated to remove Deutsche Bank and J.P. Morgan from the list of offices at the Park Avenue building. Both no longer have offices there.