Lockdown Lifted at US Air Base in Korea; No Shooter Found

The U.S. Osan Air Base in South Korea was placed on lockdown today after reports of a possible active shooter in a high school on the base, but a sweep by security forces found no suspicious activity, officials said.

Morgan Nugent, the principal of the Osan American High School, said in a posting on the 51st Fighter Wing's Facebook page that one of the school's teachers said he received a call saying there was an active shooter drill taking place.

"He reported this to me immediately. There was no scheduled school shooter drill on base so we have decided to error on the side of safety and went into a full school lockdown," Nugent said.

All personnel on the base were advised to stay in their quarters as security forces did a sweep of the whole school and its perimeter, Nugent said.

"Once we are given an all clear we will go ahead and continue the school day as is with a chance for a debrief to our kids at the end of the school day," he said. "Ultimately though your children are safe and we will continue to keep them safe."

After the sweep was completed and no shooter, suspicious activity or injured persons were found, the lockdown was lifted.

Osan Air Base, which is south of Seoul, is home to some of the 28,500 U.S. troops stationed in South Korea.