This is a breaking situation and more details will be provided once they become available.
Up to six Washington, D.C.-area military and intelligence facilities received suspicious packages Monday that contained explosive components with “disturbing” letters, officials said and a local NBC affiliate first reported.
It is unclear if any of the packages contained an actual working explosive device; all packages have been rendered safe at this point.
The National Defense University at Fort McNair; the National Geospatial-Intelligence Agency and another defense university, both at Fort Belvoir; Joint Base Anacostia-Bolling; a CIA mail processing facility; a White House mail processing facility and Dahlgren Naval Air Station all received suspicious packages, according to NBC.
All facilities are cleared, and the FBI has the materials and is investigating them.
The National Defense University at Fort McNair was evacuated Monday morning and was cleared around 1:30 p.m. The NDU package had black powder and a GPS device with a fuse, according to U.S. Army spokesman Michael Howard.
Another package contained a liquid vial and a circuit board.
NBC also reported that some of the packages included rambling letters, and an official described them as “disturbing.”
Defense Department spokeswoman Lt. Col. Michelle Baldanza said: “We are tracking the delivery of suspicious packages to multiple military installations in the National Capital Region. This incident is currently under investigation and we refer all queries to the Federal Bureau of Investigation.”
Authorities said they do not believe these incidents to be related to the Austin bombings.