Authorities who responded to a report of an active shooter at a Navy medical center in San Diego early Tuesday say they have found no evidence that a shooting took place.
The report of a possible shooter at Naval Medical Center San Diego came from a single person who reported hearing three shots, a spokeswoman for the Chula Vista Police Department said.
On Facebook, the center encouraged people to "run, hide or fight."
Chula Vista police said the witness reported hearing the shots in the basement level of Building 26, which houses a gym and barracks. Officials were doing a sweep of the building while it remained locked down on Tuesday afternoon.
"There is no evidence of a shooting having taken place," the spokeswoman said. No injuries have been reported.
Officials from the California Highway Patrol, San Diego Police Department and Chula Vista Police Department all rushed to the scene.
Investigators told My Fox 8 that they were interviewing the person who reported hearing the shots.
The center describes itself on its website as "the largest and most comprehensive military healthcare system in the Western United States." The center staffs more than 6,500 people, including military members and civilians.