SHELL LAKE, Wis. -

Sheriff's officials are investigating a rollover crash that killed two people and injured two others in Washburn County.

Deputies say 20-year-old Donald Roberts and 25-year-old Molly Undum died and two men were injured when the driver lost control of the vehicle and it rolled over several times in the town of Stone Lake Sunday.

WDIO-TV says authorities don't yet know who was driving.