UPDATE, Oct. 29: More shots have been fired at the Marine Corps museum in Triangle.
UPDATE 7:23 a.m.: Watch ABC 7's morning report on the latest in the investigation.
UPDATE 5:55 p.m.: Fairfax County police were called to the recruiting center in the 13800 block of MetroTech Drive about 8:30 a.m. Tuesday after an employee found what appeared to be two bullet holes in a window of the office and one in an adjacent business, according to a statement.
Investigators believe the shooting took place between 8:30 p.m. Monday and 8:30 a.m. Tuesday. No one was in the office at the time of the shooting, police believe.
Investigators have definitively linked the shootings at the Pentagon and the Marine Corps Heritage Museum to a single weapon, and are looking to see if it was also used in an overnight shooting at a Marine Corps recruiting station in Chantilly.
The FBI is now investigating all three shootings. Ballistics evidence linked the Oct. 17 shooting at the Marine Corps museum in Triangle with the Oct. 19 shooting at the Pentagon. No one was hurt in either incident.
Sources had said it was likely a high-powered rifle was involved in both shootings. The FBI said Tuesday it would not comment on the type or caliber of weapon.
The most recent shooting happened late Monday or early Tuesday at the Marine Corps Recruiting Station in Chantilly, Va. ABC 7 has a reporter en route to the scene. This post will be updated.