A three-alarm fire in Fall River Thursday displaced 11 residents and sent two firefighters to the hospital, fire officials said. Just after midnight, a call came in for a fire in a three-story tenement in the 700 block of Plymouth Avenue in Fall River, according to Acting Fire Lieutenant J.P. Picard. The blaze eventually escalated to three alarms and was not put out until about 5:30 a.m., Picard said. Two firefighters received non-fatal injuries, officials said. After an investigation, the State Fire Marshal’s office determined that the fire was “an accidental fire started by an exterior motor vehicle fire that spread to the building,” a spokeswoman said. Eleven people – eight adults and three girls under the age of five – were displaced by the fire.Colin A. Young can be reached at email@example.com. Follow him on Twitter @ColinAYoung.