Multiple people were shot Tuesday in a gruesome shooting in a Brooklyn subway station during rush hour, officials said.

The bloody incident broke out around 8:30 a.m. local time at the 36th Street station for the D, N, R lines in Sunset Park.

Graphic photos showing blood-stained subway platform floors and injured people at the station have emerged on social media, but it was still unclear how many victims were injured in a possible explosion, a mass shooting or both, police officials said.

The NYPD’s bomb squad is currently on the scene investigating.

A spokesman for the New York City Fire Department (FDNY) said multiple undetonated devices were found.

The suspect is believed to be dressed in some sort of construction garb, similar to a Metropolitan Transportation Authority (MTA) worker, sources said.

Agency reports