Seattle City Light crews worked through the early Sunday morning hours to restore power to thousands of customers affected by multiple outages.

At 3:05 a.m., about 8,900 customers in the Fremont, Wallingford, Ravenna, and Bryant neighborhoods were powerless.

By 4:29 a.m., power had been restored to the Wallingford, Fremont, and Eastlake areas, reducing the number of affected customers to around 5,100.

By 6:01 a.m., nearly 9,000 customers had their power restored as crews continued to work on the remaining outages.

At 6:38 a.m., it was confirmed that the outages were caused by a vault fire in the University District.