UPDATE: 6:30 p.m. Trains running again. UPDATE: 6:02 p.m. Fire declared out, firefighters packing up.
An insulated cable that erupted into flames shortly after 5 p.m. south of South Station shut Red Line service in both directions between JFK/UMass and Park Street and forced the driver of one outbound train to reverse direction and head back to South Station. Read more.