UPDATE: Power has been restored in Sumter after a sizeable power outage earlier Friday afternoon.
SUMTER -- Drivers and residents in Sumter are being warned of a power outage that's impacted customers and traffic lights.
The outage was reported at 3:56 p.m. and the cause, according to Duke Energy's data, isn't yet known
The power is expected to be restored around 6:45 p.m. according to the utility's maps.
With the outage also hitting traffic signals, drivers in Sumter should use extra caution when moving through the city until repairs are completed.