Account
Dec 21, 2023
Apr 16, 2024
Mark
Engelhart
69
47
70 inches
160 lbs
White / Caucasian
Male
In the summer of 2003, a period of personal upheaval found 48-year-old Mark Delmar Engelhart temporarily residing with a friend in Hermiston, Oregon. A landscaper by trade, Engelhart was known for his dedication to his business and the religious care he provided to the animals on his ranch. On July 24, 2003, this routine was broken. Engelhart failed to tend to his animals, missed a scheduled job, and, most alarmingly, was absent from his parents' 47th wedding anniversary celebration—an event friends and family were certain he would not have missed. Concerned by this uncharacteristic silence and the discovery that his pickup truck and personal belongings were gone, his family reported him missing on July 26, 2003. This report marked the beginning of a grim and complex investigation into his disappearance. The investigation quickly centered on Engelhart's roommate and friend, Jonathan Theodore Flaiz, who also vanished around the same time. Flaiz was located by his parents in Washington state, appearing stressed and providing inconsistent accounts of his recent whereabouts. Suspicions intensified on August 16, 2003, when authorities found Engelhart's truck at a hotel in Gresham, Oregon, with a significant amount of blood on the tailgate. Flaiz's mental state became a central issue in the case. He was eventually diagnosed with chronic paranoid schizophrenia and committed to the Oregon State Hospital. While institutionalized, Flaiz confessed to murdering Engelhart, providing a chilling motive rooted in his delusions. He claimed to believe a moth was inside his head eating his brain and that killing Engelhart was the only way to make it stop. In his confession, Flaiz detailed the events of the night of July 23, 2003, stating he struck the sleeping Engelhart with a sledgehammer. He then waited until the next day to move Engelhart's body, using the pickup truck to transport and bury him in a wooded area believed to be within an hour's drive of Hermiston. Despite this confession, and efforts that included taking Flaiz to the location he described, Mark Engelhart's body has never been recovered. In January 2007, Jonathan Flaiz pleaded guilty to murder by reason of insanity and was sentenced to life in a state hospital. The case officially concluded with a conviction, but for Engelhart's family, the inability to bring him home for a proper burial has left them without complete closure. The tragic case remains a painful reminder of a life cut short, leaving a legacy of unanswered questions and enduring grief for a family still hoping to find their loved one.
Jul 24, 2003
Hermiston
Oregon
Umatilla County
97838
No
133233
Umatilla County Sheriff's Office
Pendleton
Oregon
Umatilla County
97801
4700 N W Pioneer Pl, Oregon
5419663600
County
Law Enforcement
2003070083
2003-07-26
Umatilla County Sheriff's Office
3553
Brown
Hazel
Hazel
No
05/26/2026
