Assistant Fire Chief Bruce Plante says the blaze broke out around 3:45 a.m. Sunday after a puppy knocked over a burning candle in the first-floor unit of an apartment building on Berwick Road. The flames quickly spread after the candle ignited a quilt and mattress in the apartment.

A man who lived in the residence suffered serious burns and was transported to Massachusetts General Hospital in Boston. His injuries are not believed to be life-threatening. He was not identified.

It took more than two hours for firefighters from 17 departments to extinguish the blaze. Plante says the building is likely a total loss.