An airman at Fairchild Air Force Base has tested positive for COVID-19.

The Monday evening announcement led the base to declare a public health emergency.

The airman is in isolation at their off-base residence, according to a news release from Fairchild. The individual’s test was processed at Department of Defense laboratory, according to the release.

Health officials on the base are attempting to trace the infection in order to notify others. The officials also are working with the Spokane Regional Health District.

The emergency declaration gives base commander Col. Derek Salmi powers to restrict movement of Air Force personnel and to implement quarantines or isolation for affected people.