T police investigating anti-Muslim graffiti

MBTA Transit Police are investigating after a passenger reported finding anti-Muslim graffiti scrawled on the inside of a train car Thursday evening.

A rider shared on Twitter an image of the writing, which said, “Muslim Trash Go Home!”

The vandalism appeared to be written in black marker, on the ledge of a window on a Red Line train car headed to Alewife.

Officials from the MBTA swiftly responded to the rider’s social media post.

“Could you please forward us a car number so we and [Transit Police] can have this taken care of ASAP?” MBTA officials wrote.

The transit agency then took the vandalized vehicle out of service, MBTA spokesman Joe Pesaturo said in an e-mail to the Globe, so the evidence could be documented by police.

“The car was immediately isolated by a subway official and given to [Transit Police] to investigate,” Pesaturo said.

While it’s unclear when the graffiti was written, the discovery comes as the nation grapples with the aftermath of the horrific Orlando, Fla., shooting, in which a Muslim suspect pledged allegiance to the Islamic State militant group.

“My heart breaks for our world,” the passenger wrote on her Twitter account after finding the graffiti.