Sprinkler prevents fire from spreading in middle school (Mooresville, IN)

After firefighters fought an intentionally-set blaze at Mooresville's Paul Hadley Middle School, school surveillance video helped investigators nab a suspect.  Dispatchers received a fire alarm call just before 2:00 a.m. Saturday morning. When crews arrived and made access to the building, they discovered smoke in a hallway.  In a release, a fire department spokesman says the fire was prevented from spreading by an activated sprinkler head.