"Naval Support Activity Bethesda is currently in lockdown and all base personnel are sheltering in place as a result of unconfirmed reports of an active shooter,” the press release read.
Earlier on Monday, Montgomery County Police Department said in a Twitter message it received a call with reports of a single shot heard in Walter Reed National Military Medical Center, which has not been confirmed by police officers.
Call received at approx. 10:48 a.m. for report of single shot heard on Walter Reed campus. Officers have not confirmed initial report.
— Montgomery Co Police (@mcpnews) 6 июля 2015
US Department of Defense security forces, National Institutes of Health police forces, and medics are searching the area, the Navy says.
Naval Support Activity Bethesda, located north of Washington, DC, supports more than 40 tenant commands, including Walter Reed National Military Medical Center, the Navy Medicine Professional Development Center and the Uniformed Services University of the Health Sciences.