It’s now believed that she may have thought that President Obama was stalking her, law enforcement sources told NBC News.
The sources said that Carey, had a history of mental health problems.
The chase, on Thursday afternoon, stirred panic in the capital and briefly stopped the mechanisms of government. It happened two weeks after a man shot 12 people to death at the Washington Navy Yard.
Members of the House and Senate, in a standoff over the government shutdown, were ordered to stay in place. One lawmaker was cut off mid-sentence during a speech. A swarm of police startled tourists who were taking in Washington on a summery day.
Carey, 34, was a dental hygienist living in Stamford, Conn. Details of her background began to emerge in the hours after the episode.
Dr. Barry Weiss, a dentist, told NBC Connecticut that Carey was working for him in January 2012 when she suffered a fall and missed two to three weeks. He said that she appeared increasingly stressed after an unplanned pregnancy. Relatives have said that she may have suffered postpartum depression.
Weiss said that he fired her in August 2012 after patients complained that she was too rough.
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