HARFORD COUNTY, MD—Officials at Aberdeen Proving Ground have confirmed one case of coronavirus on the site.

In a Monday statement, Garrison Commander Col. Tim Druell confirmed that one person on the Aberdeen military base had tested positive and several other employees had been tested.

Those results have not yet come back.

Aberdeen Proving Ground has upgraded its health protection condition (HPCON) to Bravo based on the risk level in the local community.

No further details have been made available at this time.