The bureau is famously tight-lipped about releasing information when its agents are involved in shootings, and because FBI agents generally don't do street patrols or respond to regular service calls, they are involved in fewer such incidents than many local police agencies.
Initially, security personnel were said to be negotiating with the suspect who had got out of his vehicle together with a weapon.
But in 1993, a man who said he was protesting USA policies toward Muslims shot and killed five people outside the facility, and then fled to Pakistan and Afghanistan.
Officials say the man, who has not been named, was transported at an area hospital, but the extent of is injuries have not been made public.
'The FBI is reviewing an agent-involved shooting that occurred at approximately 6pm on Monday.
Pfizer-BioNTech seek COVID-19 vaccine authorization for kids in EU
Asked if he agreed that AstraZeneca had not overpromised, Irish Health Minister Stephen Donnelly told national broadcaster RTE: 'Not for a second.
News national security correspondent Ken Dilanian reported that no shots were fired and "another law enforcement source said Central Intelligence Agency security officers were negotiating with the person, who remained in his or her vehicle".
"Our compound remains secured, and our Security Protective Officers working the incident are the only Agency personnel directly involved", the agency said.
The CIA has been the target of attacks in the past.
In 1993, a Pakistani man, Mir Aimal Kansi, shot two agency employees dead and wounded three others as they sat in their cars waiting at a stoplight to enter the compound.
In April, a U.S. Capitol police officer was killed and a second was injured after a suspect rammed a barrier.