A Tucson immigration attorney died in a single-vehicle crash that caused her vehicle to plunge into a northern California river last week.

Shortly before 5 p.m. Friday, authorities received a report from kayakers of an unconscious person floating in the Feather River in Quincy, Calif., according to a report from the California Highway Patrol. A search and rescue team and the kayakers helped recover the woman later identified as 66-year-old Zada Anne Edgar-Soto.

Authorities later determined Edgar-Soto was driving a rented Toyota in a mountainous area on Highway 70 in Quincy, Calif., when she lost control of the vehicle at a curve and swerved down an embankment and into the river, according to a report from the California Highway Patrol.

The vehicle floated for more than 300 feet before overturning and sinking in the river, the report said.

Late Friday a family member who was expecting Edgar-Soto notified the the Plumas County Sheriff’s Office that she had not shown up. He identified Edgar-Soto by photos, the report said.

Edgar-Soto graduated from the University of Arizona with her Juris Doctor and has been practicing law since 1976, according to her website.