WASHINGTON (AP) — A federal law enforcement official says the woman killed by police after trying to drive through barricades outside the White House had believed the president was communicating with her and was delusional.

The official, who had been briefed about the investigation, spoke on condition of anonymity Friday because the person was not authorized to speak publicly about the ongoing investigation. The official says the woman, 34-year-old Miriam Carey, had been in a deteriorating mental state since December.

The official says investigators have been interviewing the woman's family about her mental condition. The official says investigators believe the woman drove directly to Washington immediately before Thursday's car chase in the nation's capital that prompted the shooting.

UPDATE 1:18PM WASHINGTON (AP) - AP Source: Shots at Capitol related to vehicle that tried to ram barricade at White House.

UPDATE 1:05PM WASHINGTON (AP) - US Capitol Police say lockdown on Capitol has been lifted.

WASHINGTON (AP) — Police say the U.S. Capitol has been put on a security lockdown amid reports of possible shots fired outside the building.

People standing outside the Supreme Court across the street from Congress were hurried into the court building by authorities.

U.S. Capitol police said they had received reports of gunshots and one police officer has been injured.