The fire-suppression system doused a fire in the living room of a first-floor apartment, with follow-up effort by volunteer firefighters who answered the 12:15 p.m. alarm, said Chief Bobby Holiday.
No injuries occurred, he said.
As of 12:40 p.m., the cause of the fire was under investigation, and it remained to be determined if the apartment would be immediately habitable, Holiday said.
The three-story River Street Commons, bounded by Shrewsbury and Bridge avenues at Catherine Street, occupies the former River Street School building.
