Boston, MA - When power problems caused a Blue Line train to abruptly shut down in the Harbor Tunnel, officials were forced to escort hundreds of passengers to safety, via the long tunnel. Police guided the stranded riders down the tracks until they were told to access an emergency exit near Maverick Street.

Some passengers documented the experience with photos from their camera phones, and one passenger contacted a spouse who posted a viral story to the internet.

Blue Line Train Stopped on Tracks

Photo credit to @Mahan_the_man via Twitter.

Blue Line Passengers Unload from Train

Photo credit to @InToriLex via Twitter.

Blue Line Riders Guided Down Train Tracks

Photo credit to @InToriLex via Twitter.

Blue Line Passengers Directed Towards Exit

Photo credit to @InToriLex via Twitter.

Blue Line Riders Use Emergency Exit On Maverick Street

Photo credit to @InToriLex via Twitter.

The MBTA reportedly updated Blue Line commuters advising that a single line is being used for both directions in the tunnel. This is likely to slow commuting significantly. The MBTA is also reportedly supplementing this route with busses.