A false alarm of a shooting triggered a lockdown Wednesday afternoon at Travis Air Force Base in California.
The installation around 5:05 p.m. local time confirmed that reports of gunshots at the Exchange were "a false alarm" and lifted the lockdown.
News of the mistaken report came after the base posted multiple security alerts to its social media accounts.
"Travis Air Force Base is currently responding to a real world security incident," an earlier posted stated on its Facebook page. "More details will be released as they become available. The public is being asked to stay away from the base to ensure emergency responders can respond accordingly."
In a separate message on Twitter, the base ordered employees and residents to "Shelter in place. Lock doors/windows. Await further info. Follow Travis Facebook page for updates."
There was confusion online and on the installation after early reports indicated a security drill was scheduled to take place.
Calls to the base's public affairs office weren't immediately returned.
The installation is located in the greater San Francisco Bay area and falls under the control of the Air Force's Air Mobility Command.