BANGOR – Evidence collected from a Second Street apartment building that was extensively damaged by fire Sunday afternoon has been sent to a laboratory to be analyzed, Bangor police Sgt. Paul Kenison said Tuesday. Officials say the fire likely was arson.

Among the pieces of evidence is a bottle that may have been used to create the Moltov cocktail-type incendiary device that witnesses told police a man threw against the side of the building in an alley where several mattresses lay in a pile.

The fire was reported around 12:30 p.m. Sunday and spread from an alley next to the 11-unit apartment building at 40 Second St. into the building.

Police are continuing to investigate the incident and are following up on some leads, Kenison said.

BDN writer Bill Trotter

contributed to this report.