HARNEY COUNTY -- A small bouquet of orange and pink flowers on the roadside marks the site of a crash that killed a 15-year-old Burns boy Thursday night.

The rollover wreck happened around 7 p.m. on Highway 78, 18 miles east of Burns.

Police say the 15-year-old was headed east in a 1995 Nissan pickup when the vehicle drifted off the shoulder. The boy overcorrected, causing the pickup to overturn and roll multiple times.

The driver, his 14-year-old passenger, and his 10-year-old little brother were all thrown from the vehicle as it rolled. None of the children were wearing seatbelts, according to police.

The 15-year-old was pronounced dead at the scene. The 14-year-old boy was taken by air ambulance to Oregon Health and Science University in critical condition.

The 10-year-old, who had been riding in the backseat, was taken to Saint Charles Bend. His injuries are not life-threatening, according to OSP.

All three boys are from Burns.

OSP investigators say distracted driving may have been a factor in the wreck. The boys did not have permission to be driving the pickup, according to police.

The names of the children have not been released. The crash remains under investigation.

Harney County Sheriff's Office, Harney EMS, and the Oregon Department of Transportation also responded to the wreck.