A woman died early Thursday in a one-car crash in Otis Orchards.

Emergency crews were called at about 5:30 a.m. to Wellesley Avenue and Ashton Road, said Spokane County Sheriff’s Deputy Mark Gregory.

Deputies said the woman, driving a 1999 Honda Accord, crossed the centerline and crashed into a tree near the westbound shoulder. The person who reported the crash noticed a vehicle in the front yard of a house.

The woman was not wearing a seat belt. Investigators believe speed and impairment may have been factors. .

Deputies said initial information indicates the woman left the area of Barker Road and Trent Avenue sometime between midnight and 3 a.m. and traveled east on Wellesley, where she crashed.

Anyone with information is asked to call Detective Jeff Welton at (509) 477-3237.