More than 39,000 customers were without power in the nation's capital after a Pepco substation experienced an equipment issue on Saturday, reports CBS affiliate WUSA. That number has since been revised down to 5,500 as of 10 p.m. Officials were unsure when power will be fully restored to remaining customers.
"We are working to restore service to customers as quickly and safely as possible and are investigating the cause of this incident," Pepco officials tweeted.
Firefighters reported that they were responding to multiple calls of people stuck in elevators. Deputy Mayor Donahue tweeted about the outage, pointing out a traffic light that had been affected.
Mayor Muriel Bowser said that the D.C. Department of Homeland Security is working to resolve the issue.