Authorities are waiting for toxicology tests to determine whether temperatures as low as 22 below zero or carbon monoxide poisoning killed two men stranded in their car overnight Wednesday.
Donald E. Chambers, 39, of Ford, Wash., and Jack Jeffries, 46, of Deer Park, died after Chambers' car slid into a snow-filled ditch in southern Stevens County, near Deer Park.
Chambers was dead when rescue workers arrived about 6 a.m. Thursday, and Jeffries died a few hours later at Deaconess Medical Center in Spokane.