On December 6, 2017, at about 11:51 p.m., Oregon State Police (OSP) Troopers responded to a report of a single-vehicle crash on Highway 140 (Warner Highway), 44 miles east of Klamath Falls in Klamath County.

Preliminary investigation revealed that a 1999 Ford F150 pickup, operated by Carol Lynn Peterson, age 26, of Bonanza, was westbound when for unknown reasons, left the roadway and overturned. Peterson was ejected from the vehicle and died from injuries sustained in the crash.