A massive power outage affected more than 13,000 customers in Fullerton, CA Monday night.

The outage affected homes and businesses at about 8:39 p.m.

According to Southern California Edison, 13,902 customers were initially affected and 12,788 customers were without power in Fullerton as of 10:13 p.m. By 3 a.m., crews restored power to a majority of the customers affected.

The outage was centered a couple of blocks east from the Fullerton Downtown Plaza.

There was a problem at a substation near the intersection of South Harbor Boulevard and Walnut Avenue, according to SCE spokesman Paul Netter.

Drivers were warned to take extra caution navigating intersections and treat every intersection as a four-way stop.

There were no boundaries for the outage.

Categories: U.S.