Police say an explosion under the car of a candidate for the Utah House of Representatives was caused by a vehicular malfunction and not an explosive device. Democrat Robert Burch told police a small explosion happened as the car was backed out of his family’s driveway in the Salt Lake City suburb of West Valley City earlier this month. Burch told authorities he may have been targeted because of his run for a seat in Utah House District 30. Police said Tuesday the explosion was the result of a catastrophic failure of the car’s air conditioning system.