WASHINGTON — A security incident outside CIA headquarters early Thursday led to a shooting, authorities said. Officers with the Fairfax County Police Department in Virginia responded to what they described as a “nonfatal” shooting at the agency’s headquarters in McLean around 4 a.m. to assist CIA police with traffic control.

An anonymous source said the suspect, identified as a young U.S. citizen, had a history of driving under the influence.

A woman was shot Thursday morning by security guards outside the CIA headquarters in Virginia, a person familiar with the matter told NBC News. Shots were fired early in the morning, prompting what the CIA said was a "security incident." The shooting was nonfatal.