An armed man, who also claimed he had a bomb in his vehicle, was shot dead outside CIA headquarters in Virginia on Monday, according to reports and FBI officials.

The suspect, who was not immediately identified, was injured in a shooting involving an FBI agent around 6 p.m. Monday after a standoff of several hours outside McLean’s headquarters, the FBI’s Washington Field Office said .

The man allegedly drove to the doors of the CIA building that morning and made statements that he had a bomb in his vehicle, CNN reported, citing sources familiar with the matter.

Police sources also told NBC News that the suspect attempted to break into the CIA headquarters and brandished a gun before being shot by FBI agents.

A source said the man – who is mentally disturbed and who has previously attempted to enter the CIA campus – claimed to have explosives, but authorities have not confirmed if he has any, NBC reported News.

A CIA spokesperson told CNN in a statement earlier Monday that its compound “remained secure and its security guards were the only agency personnel directly involved in the incident.”

The man was taken to hospital for treatment following the gunfire. His condition was not immediately clear and FBI officials did not describe the weapon he allegedly carried.

“The FBI takes seriously all shooting incidents involving our agents or task force members,” the Washington field office said in a statement. “The review process is thorough and objective, and is conducted as expeditiously as possible under the circumstances.”