By Carla Branch
The fire at the Shell Gas Station at 4670 Duke Street yesterday was caused by a malfunctioning furnace.
The Alexandria Fire Department was called to the gas station at 8:17 a.m. yesterday. Due to the mutual response agreement, firefighters from Arlington and Fairfax counties also responded. Traffic was snarled for several hours while firefighters contained the blaze, which never reached the gas pumps.
Items within the building. There were no injuries.