Firefighters have dealt with three fires in three days, and two of them remain under investigation.
The latest blaze was early Monday on Newland Avenue, where firefighters arrived just after 1 a.m. to find the rear of the empty building in flames.
Sunday, firefighters battled a blaze in an office/apartment building on Winsor Street. It started just before 10 a.m. The building housed Tom Kennedy's Restoration & Remodeling.
It took about an hour to get the fire under control. No one was injured in the blaze, which was blamed on an electrical problem.
At about 8 p.m. Saturday, firefighters were called to a blaze in a three-family home on Foote Avenue.