A fire that broke out at a Massachusetts church not long after Easter services is being investigated as a possible arson, according to the FBI and state and local law enforcement agencies. The fire started about 5:30 p.m. Sunday at the Faith Lutheran Church in Cambridge. Firefighters from 18 engine companies and eight ladder companies responded. No injuries were reported. Investigators are asking anyone with photographs or videos of the scene, including the day before the fire, the day of the fire, and during the firefighting operations to submit them to the FBI. The church building was completed in 1909.