D.C. police say they’ve completed their investigation into the death of a Washington lobbyist who died during a car crash and fire inside the garage of her Capitol Hill home, officials said.

Investigators from the police department’s Major Crash Unit and the D.C. fire department concluded that Ashley Turton, 37, lost consciousness while behind the wheel of her BMW sport utility truck as she tried to leave her garage early in the morning of Jan. 10, officials said in a statement. The SUV then crashed in the garage and caught fire.

In February, the D.C. medical examiner’s office ruled Turton’s death accidental, and said she died from burns and inhaling “products of combustion.” An autopsy also concluded that alcohol intoxication contributed to her death, the office said.