The two people injured were hit by a piece of equipment that malfunctioned from an underground vault that is owned by Southern California Edison (SCE). SCE is a utility company that supplies electricity to many residences and businesses in Southern California. The explosion left 2,100 residents without power.
"We don't have a cause why this happened", from SCE spokesman Steve Conroy. The incident was reported at Waterman Avenue and Ninth Street in San Bernardino. San Bernardino is about 62 miles east of downtown Los Angeles.