Mass. in pursuit of an arsonist

George Rizer for The Globe

The latest fire, ruled an ­arson, happened late Monday night in a vacant outbuilding at the old Raynham dog track.

ARAM BOGHOSIAN FOR THE BOSTON GLOBE

On Nov. 27, a fire was started at a home on Quincy Avenue in Quincy.

ARAM BOGHOSIAN FOR THE BOSTON GLOBE

On Nov. 27, a building on Main Street in Hanson was destroyed.