(Updated at 1:10 p.m.) More than 4,000 Dominion customers in North Arlington are currently without power.

The outage has been reported in the Westover and Bluemont neighborhoods, as well as in the area around Virginia Hospital Center. Traffic lights are out along parts of George Mason Drive and Washington Blvd, according to several Twitter users. The outage was first reported just before 12:30 p.m.

Dominion is telling customers the outage is the result of “a circuit breaker issue,” according to a tipster.

According to Dominion’s outage map, 4,070 customers have lost power in Arlington. The power is expected to be restored some time between 3:00 and 5:00 p.m.