Crime Solvers Central
Crime Solvers Central
298 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP28119) and 4 other sources
In the summer of 1994, a 35-year-old man named Donald Kenneth Shelenberger vanished under puzzling circumstances in Pima County, Arizona. On July 3rd, he made arrangements with a friend for a hiking trip on Mount Lemmon, a prominent peak near Tucson. This communication was the last time anyone is known to have heard from him. After that day, all contact with Shelenberger ceased, leaving his friends and family with unanswered questions and growing concern. He was described as a white male with brown hair and blue eyes, standing at 5'11' and weighing approximately 160 pounds.

The details surrounding Donald Shelenberger's disappearance remain scarce, adding to the mystery of his case. He was planning to hike with a friend, but it is unclear if he ever met up with this individual or made it to the mountain at all. Despite the passage of time, very little information has emerged to shed light on what might have happened to him on that July day. The lack of witnesses or any discovered belongings has left investigators with few leads to follow. His case is classified as an endangered missing person, and the Pima County Sheriff's Department continues to be the primary investigating agency.

The case of Donald Shelenberger is a somber reminder of the many individuals who disappear without a trace. With no new evidence or information, his disappearance has become a cold case. The passage of decades has not diminished the hope of finding answers, though the likelihood of a resolution fades with each passing year. The overview of this case is one of abrupt silence; a man with plans for a recreational outing simply ceased to be in contact with the world, leaving behind a void of information and a lingering sense of uncertainty for those who knew him. The investigation remains open, a testament to the enduring effort to uncover the truth behind what happened to Donald Kenneth Shelenberger.

Last Seen: Jul 2, 1994

Possible Unidentified Matches (10)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

77%Possible
John Doe — Red Rock, Arizona
UP10187 • Found Sep 5, 1994
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Sex ✓Male
Age 100%Est. 25–35 vs 35
Race 100%White
Location 92%41 mi away, same state
TimingFound 2 months after last seen
Hair 50%Blond vs Brown
76%Possible
John Doe — Near Quartzsite, Arizona - unidentified case UP16848
John Doe — Near Quartzsite, Arizona
UP16848 • Found Jun 27, 1994
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Sex ✓Male
Age 100%Est. 34–48 vs 35
Race 100%White
Location 58%186 mi away, same state
TimingFound same day as last seen
Height 100%6'0" vs 5'11"
Weight 96%141 lb vs 160 lb
76%Possible
John Doe — Laveen, Arizona - unidentified case UP2028
John Doe — Laveen, Arizona
UP2028 • Found Nov 23, 2003
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Sex ✓Male
Age 100%Est. 20–35 vs 35 when missing
Race 100%White
Location 76%95 mi away, same state
TimingFound 9 years after last seen
Height 100%6'0" vs 5'11"
Weight 75%196 lb vs 160 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue
76%Possible
John Doe — Nogales, Arizona - unidentified case UP7240
John Doe — Nogales, Arizona
UP7240 • Found Jul 17, 2000
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Sex ✓Male
Age 100%Est. 25–35 vs 35 when missing
Race 100%White
Location 85%66 mi away, same state
TimingFound 6 years after last seen
Height 84%5'9" vs 5'11"
76%Possible
John Doe — Arizona - unidentified case UP1933
John Doe — Arizona
UP1933 • Found Jul 30, 1995
View case
Sex ✓Male
Age 85%Est. 20–40 vs 35 when missing
Race 100%White
Location 76%96 mi away, same state
TimingFound 13 months after last seen
Height 100%5'10" vs 5'11"
Weight 91%137 lb vs 160 lb
Hair 60%Black vs Brown
Eyes 0%Brown vs Blue
75%Possible
John Doe — Near Vamori, Arizona - unidentified case UP17803
John Doe — Near Vamori, Arizona
UP17803 • Found Sep 25, 1998
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Sex ✓Male
Age 100%Est. 30–40 vs 35 when missing
Race 60%Hispanic
Location 95%27 mi away, same county
TimingFound 4 years after last seen
Height 100%6'0" vs 5'11"
75%Possible
John Doe — Eloy, Arizona - unidentified case UP6332
John Doe — Eloy, Arizona
UP6332 • Found Sep 19, 2002
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Sex ✓Male
Age 85%Est. 35–55 vs 35 when missing
Race 100%White
Location 90%49 mi away, same state
TimingFound 8 years after last seen
Height 100%5'11" vs 5'11"
Hair 50%Blond vs Brown
75%Possible
John Doe — Phoenix, Arizona - unidentified case UP1956
John Doe — Phoenix, Arizona
UP1956 • Found Feb 13, 1999
View case
Sex ✓Male
Age 100%Est. 35–50 vs 35 when missing
Race 100%White
Location 75%99 mi away, same state
TimingFound 5 years after last seen
Height 68%6'2" vs 5'11"
Weight 70%200 lb vs 160 lb
Hair 100%Brown vs Brown
75%Possible
John Doe — Tucson, Arizona - unidentified case UP11040
John Doe — Tucson, Arizona
UP11040 • Found Mar 6, 1997
View case
Sex ✓Male
Age 100%Est. 30–40 vs 35 when missing
Race 100%White
Location 91%42 mi away, same county
TimingFound 3 years after last seen
Height 52%5'7" vs 5'11"
75%Possible
John Doe — Laveen, Arizona
UP1930 • Found Sep 11, 1994
View case
Sex ✓Male
Age 85%Est. 30–50 vs 35
Race 100%White
Location 76%95 mi away, same state
TimingFound 2 months after last seen
Height 68%5'8" vs 5'11"
Weight 100%175 lb vs 160 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.