An explosion took place on Sept. 30, 2013 on the University of California at Berkeley campus, and an order to evacuate has been issued, according to NBC Bay Area.
According to the report, earlier in the evening classes were canceled and students were told to stop all lab activity and leave campus buildings due to a power outage.
The explosion rocked the campus just before 7 p.m. PT near Sather Tower, acting Fire Chief Gil Dong told NBC.
Four ambulances have been dispatched to the scene, but it remains unclear how many people have been injured and to what extent.
Dong told NBC the cause of the power outage and the explosion have not yet been determined.
However, the Contra Costa Times reports that a tweet from the Office of Public Affairs said the power outage and the explosion were caused by a “system failure.”
The newspaper was told by Acting Dep. Chief Avery Webb that fire crews responded to Latimer Hall where several chemistry classes are held and there was a report of an ammonia leak.