Primary / Secondary School, School / University Tewksbury, MA – Sprinklers control overnight fire at pre-school building June 2, 2015 viking210 A two-alarm fire broke out at a local pre-school late Friday night, leaving the building closed Monday. The fire happened at Knowledge Beginnings at 200 Old Main St., according to Fire Chief Michael Hazel. The building was not occupied at the time. The blaze, which started in a second floor bathroom, was likely caused by an electrical problem, Hazel said. The fire then spread into the attic above that bathroom, and was contained by the activated sprinkler system. Fire crews then arrived on scene and extinguished the blaze. The Billerica Fire Department assisted at the scene, and the Wilmington and Andover departments helped to provide station coverage. Power was shut down to the whole building over the weekend as a precaution and the school was closed Monday.