The FBI is investigating Monday why suspicious packages, some containing explosive materials, were sent to military installations and government facilities in the Washington, D.C., area, according to the bureau.
Packages were mailed to Fort McNair in D.C., Fort Belvoir in Virginia, Joint Base Anacostia–Bolling in D.C. and a naval support facility in Virginia, as well as a CIA mail processing facility in Virginia, per multiple news outlets.
NBC also reported that a package was found at a White House mail processing space.
A package carrying explosive material was received at the National Defense University at Fort McNair at 8:30 a.m. Monday, prompting an evacuation of the premise.
It tested positive for “black powder and residue” around 12:30 p.m., according to Army spokesman Michael L. Howard.
“The X-ray conducted indicates suspected GPS and an expedient fuse were attached,” he added in a written statement provided to CNN.
Two packages were sent to Fort Belvoir, including its National Geospatial-Intelligence Agency site.
One contained liquid in a vial and a circuit board, a source told NBC.
All the packages were eventually declared safe and cleared premises were opened for re-entry.
Defense Department spokeswoman Lt. Col. Michelle Baldanza told multiple news outlets the department was aware of the situation and that it is being probed by the FBI.
The packages are not believed to be connected to four bombings in Austin, Texas, earlier in March that killed two people and injured four more.
Another bomb package mailed from Austin also exploded at a nearby FedEx facility, injuring a fifth victim.
