SANTA ANA, Calif. (AP) — A power outage has briefly grounded the first flights out of John Wayne Airport in Southern California.

Airport spokeswoman Jenny Wedge says power was out from 6 a.m. to 6:30 a.m. Friday. The reason for the outage hasn't been disclosed.

The airport's website says flights scheduled to leave from 6:45 a.m. to 7:30 a.m. were delayed about an hour.

Wedge says the outage hit while passengers for the first flights out of the airport were going through security screening.

Transportation Security Administration passenger and luggage screening devices were rebooted and passenger screening has resumed.

The number of flights delayed hasn't been disclosed.

As of 8 a.m., Wedge says some airlines are reporting 30-minute to one-hour delays.