SAN DIEGO (AP) – Naval Medical Center San Diego says an active shooter has been reported and urged people inside the hospital to “run, hide or fight.”

The Navy hospital posted the update on their official Facebook page, saying the shooter was reported in Building 26 on the campus. The building houses offices and barracks for wounded sailors and Marines as well as a gym.

Center spokesman Mike Alvarez wouldn’t confirm there was an active shooter but says authorities are responding to a report of gunshots.

Law enforcement arrived at the scene in patrol cars and Humvees.