KNOXVILLE, Tenn. (WATE) — If you were planning on getting your driver’s license in person, you might need to reschedule due to an unexpected outage.

The Tennessee Department of Safety and Homeland Security said Thursday that Tennessee Driver Services Centers are experiencing a statewide system outage. At around 3:40 p.m. on Thursday, a spokesperson with the state said nearly half of all driver services centers are back online across the state. By 7:50 p.m. all Driver Services Centers were back online.

“Driver Services Centers are experiencing a statewide system outage,” the agency tweeted. “As a result, driver license transactions are not able to be completed at Driver Services Centers at this time. We are actively working to identify, & resolve the issue. We apologize for the inconvenience.”

The agency said e-Services (driver license transactions available online) have not gone offline and are available.

The cause of the outage is still under investigation according to a a spokesperson with the state.

EDITOR’S NOTE: This story has been updated with additional information.