Primary / Secondary School Antioch, CA – Sprinkler system helps to limit damage in arson fire at elementary school August 5, 2015 viking210 Fire inspectors suspect an arsonist set two dumpsters ablaze at an elementary school in Antioch on Saturday, a fire official with the Contra Costa County Fire Protection District said Monday. Firefighters responded just before 7 p.m. to a report from a person walking by the Mno Grant Elementary School, located at 4325 Spaulding St., of a fire at the school, fire Capt. George Laing said. Laing said fire crews arrived to find two dumpsters engulfed in flames that were adjacent to a masonry wall and overhang. The fire burned through some of the overhang and caused minor damage to the roof but Laing said for the most part, the fire was contained to the overhang and dumpsters. One sprinkler activated and protected the main electrical service, Laing said. Firefighters were able to douse the flames quickly and Laing said there were no injuries reported. Fire inspectors determined someone set the dumpster on fire intentionally, but Laing said he couldn’t release more details because the fire is under investigation. A call to Antioch police was not immediately returned.Laing said it’s helpful for neighbors to pay attention to their surroundings and immediately report any suspicious activity or smoke to 911.