Campus officials say power has been restored to most of the University of California, Berkeley, the morning after an explosion left one person hospitalized for minor burns.
The school's Twitter feed announced early Tuesday that most classes would meet as scheduled.
Eleven buildings remain without power and classes in those buildings are canceled.
The explosion occurred in an underground utility vault outside California Hall as crews were trying to restore power following an outage before 7 p.m. Monday. Officials say in addition to the one person hospitalized, three others also received minor burns but refused treatment.
Spokesman Dan Mogulof says the blast may have been caused by an underground copper wire theft at a campus substation last week
A massive explosion that followed a power outage on the UC Berkeley campus resulted in several possible injuries and forced a campuswide evacuation Monday night.
The explosion was reported near Sather Tower shortly before 7 p.m., KTVU.com reported. Witnesses described the blast as being a two-story fireball shooting into the air.
A university spokesman told the Los Angeles Times that "a few" people suffered minor injuries in the explosion and that one victim was taken to the hospital.
Campus officials believe the power outage may have been caused by an attempted theft of copper wire from the campus' underground power system last week, and that the explosion resulted from damage fto the wiring that went undetected.