UPDATE: Power has been restored.
OKLAHOMA CITY – Nearly 3,500 OG&E customers are without power in southwest Oklahoma City and Moore.
OG&E officials say they are not sure what caused the large outage that is affecting approximately 3,449 customers.
Nearly 10,000 customers were affected for a short time Tuesday afternoon.
It is unclear how long it will take for power to be restored to those affected.
Click here for OG&E’s System Watch.
This is a developing story. Check back for updates.