UPDATE: In a statement to the press, the Quantico Marine Corps base said the "incident earlier which caused the closure of the Main Gate on Fuller Rd. has now been resolved."
The vehicle suspected of containing explosives has been cleared and all gates have "resumed normal operations," according to officials.
The main gate at the Quantico Marine Corps base in Prince William County, Virginia, has been shut down after a military working dog trained in explosive detection “indicated” on a vehicle. Military police and explosive ordinance disposal Marines responded to the scene and searched the vehicle.
It wasn't immediately clear if officials found explosives.
The base confirmed that no traffic is being allowed in or out of the main gate on Russell Road. The gate was reportedly shut down at around 2:45 p.m. and remained closed as of 5:30 p.m.
In what is being described as a separate event, a man who was driving around shouting threats in another area of the base was also arrested, according to officials.
This is a breaking news story and will be updated.