Local and federal authorities on Monday responded to reports of a shot fired at the Walter Reed Military Medical Center in Bethesda, Maryland, the Montgomery County Police Department confirmed to BuzzFeed News.
But nearly two hours later, police had found "no indication" that any shooting took place, a spokesperson for the Montgomery Police said at a press conference outside the hospital.
"Police operations are complete," the office said around 1 p.m.
The authorities were focusing on a 20-story building in the medical center. As of 1:00 p.m., they had searched all but 5 floors. Walter Reed employees were told continue to shelter in place until the search through the high-rise was complete.
"I'm hiding. Not a drill is the only thing we've heard," someone who claims to be inside the building told BuzzFeed News. "Only message received was to keep sheltering."
A spokesperson for Walter Reed did not immediately respond to a request for comment.
People who said they were present at the military hospital took to Twitter to post images of what they described as an "active shooter" situation:
This is the scene outside the hospital:
Nicolás Medina Mora is a reporter for BuzzFeed News and is based in New York.
Contact Nicolás Medina Mora at email@example.com.
Got a confidential tip? Submit it here.