PECO officials said an issue with underground cables knocked out power for a few hundred customers in Center City on Tuesday morning.

PECO is reporting a power outage affecting the area of 30th Street in Center City. A PECO spokesperson told PHL17 the power outage began at 4:40 a.m. and was caused by a “brief fire” and overheating wires underground.

The outage began along Market Street when underground cables overheated around 4:30 a.m., according to a PECO spokesperson. The issue led to a power outage initially impacting about 500 customers in and around University City, including 30th Street Station, with is currently operating on a backup generator.