(CNN) -- The Navy says an initial inspection at a San Diego medical center found no signs of a gunman or a shooting, despite online reports.

A shooting had been reported at the Naval Medical Center San Diego, according to the center's Facebook page.

"All occupants are advised to run, hide or fight. All non-emergency response personnel are asked to stay away from the compound," according to Tuesday morning's post.

On its website, Naval Medical Center San Diego bills itself as "the largest and most comprehensive military healthcare system in the Western United States." It has eight clinics for active duty personnel and nine primary care sites for their family members.

    The facility had more than 1.2 million outpatient visits in 2014, admitting more than 19,000 patients that year. The hospital offers a comprehensive array of medical services, including births.

    This is a developing story. Again, an initial inspection finds no signs of a gunman or a shooting.

    CNN's Joseph Netto contributed to this report.