An apparent fire on the Orange Line caused major delays in Boston for hours Wednesday.
Images shared on social media showed what appeared to be a track fire near a station and smoke filling the air at the station. Firefighters were also seen inside a smoky station.
The MBTA's Twitter account responded by noting the agency was "looking into an issue with the third rail at the station."
Orange Line train service was suspended between North Station and Back Bay for about 90 minutes because of the third rail issue at the Tufts Medical Center station. The Green Line was available for alternative service.
Earlier, the T had said that southbound Orange Line trains were facing delays over 30 minutes.
Repairs were completed and service restored just after 2 p.m., though with continued delays of about 15 minutes.
The Boston Fire Department didn't immediately share information on responding to a fire on the Orange Line.
Last July, an Orange Line train caught fire over the Mystic River, prompting scores of passengers to evacuate off the bridge. That fire came amid a federal review of the T sparked by a slew of prior incidents involving trains.
