Dennis Oscar Lingaas, 48, vanished from Denver on June 5, 1993, according to a roommates report. Three days later his 1973 Buick was found abandoned in the middle of a roadway in a remote area of Jefferson County, Colorado. On April 7, 1994, a U.S. Forest Service employee discovered human remains near Forest Service Road 695 and County Road 96 that were later identified as Lingaas.

The case is classified as a homicide and remains an open, active cold case with the Jefferson County Sheriff’s Office. No suspects have been publicly identified and no arrests have been announced. The circumstances of his disappearance and death are unresolved.

If anyone has information about Lingaas, his Buick, or activity around Forest Service Road 695 and County Road 96 in June 1993, please contact the Jefferson County Sheriff’s Office.