At least two people, including a police officer, have been shot in a Manhattan office building, a person familiar with the matter told The Associated Press.

The person, who did not immediately know the victims’ conditions, was not authorized to publicly discuss the ongoing investigation and spoke to the AP on condition of anonymity.

Police Commissioner Jessica Tisch said in a post on social media that the scene “has been contained and the lone shooter has been neutralized.”

The Midtown office building houses some of the country’s top financial firms and the National Football League.

The Fire Department of New York says emergency crews were called to the Park Avenue office building Monday evening for a report of someone shot. A spokesperson said the call came in around 6:30 p.m. but provided no other details.

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

FBI Deputy Director Dan Bongino said in a social media post that agents and other bureau personnel were responding to provide support to what he said was an “active crime scene.”