A sister of the woman shot dead by police in Washington after trying to ram her car through a White House barrier says there were no indications that her sister was unstable.
Miriam Carey's actions sparked a high-speed car chase on Thursday which ended with the 34-year-old mother, of Stamford, Connecticut, being shot by officers.
Carey's one-year-old daughter who was in the car with her at the time was unharmed and has been taken into protective custody.
The incident came at a time of high political tension in the US capital, with Congress debating how to resolve the shutdown of the federal government when shots rang out.
Miriam Carey was a dental hygienist. Pic: Facebook Last night, Carey's sister Amy Carey-Jones said her sister "seemed OK" the last time they spoke more than a week ago.
She said her family had "a lot of questions" about her sister's death and why police opened fire.
"My sister was a loving mother, she was a law abiding citizen, she had no political agenda and she did not deserve to have her life cut down at the age of 34," she added.
A second sister, retired New York City police officer Valarie Carey, said police should not have used deadly force.
She said there was "no need for a gun to be used".
Speaking outside Valarie Carey's home in Brooklyn, both sisters said Miriam had been suffering from post-natal depression since the birth of her baby.
A federal law enforcement official, speaking on condition of anonymity, said Carey held the delusional belief that President Barack Obama was communicating with her.
Carey had made delusional "expressions about the president in the past" and "believed there was some communications to her", and concerns about her mental health were reported in the last year to Stamford police, the official said.
Carey's one-year-old daughter was unhurt Carey, who worked as a dental hygienist, had no previous run-ins with the US Secret Service, which is responsible for White House security, a law enforcement official said.
Police said there appeared to be no direct link to terrorism, and there was no indication Carey was armed.
Capitol Police Chief Kim Dine called it an "isolated, singular matter".
The chase began shortly after 2pm when a black Toyota Infiniti attempted to smash through the barricade close to the White House.
Video footage showed officers with guns drawn attempting to get the driver out of the vehicle.
But Carey spun the car around and sped away, knocking a law enforcement official.
The car raced up Pennsylvania Avenue toward the Capitol where Congress was in session.
Police chased and fired at the car, which came to a halt near the Capitol building, and she was shot dead.
By the end of the chase, two people were injured - a Secret Service member struck by the car outside the White House, and a Capitol Police officer whose vehicle hit a barricade during the chase.
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