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

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP126391) and 6 other sources
Dietrich Helmut Jonke, a 68-year-old man, was last seen on June 8, 1983, after leaving Los Angeles, California. He was on a flight bound for Berlin, Germany, with a layover in London, England. While it was confirmed that Jonke arrived in London, he never boarded the connecting flight to Berlin and has not been seen or heard from since. His disappearance remains a mystery, and few details have emerged over the years about what might have happened after his arrival in London.

At the time of his disappearance, Jonke was described as 5 feet 6 inches tall, weighing 118 pounds, with gray hair and brown eyes. Dental records are available to investigators, but no other identifying features or personal items were noted. Despite the efforts of the Los Angeles Police Department, Jonke’s case remains unsolved. It has been classified as an endangered missing person case, as there has been no indication of his whereabouts since that day in 1983.

The circumstances surrounding Jonke’s disappearance remain unclear, and investigators continue to seek any information that might shed light on his case. His last known location being in London adds an international dimension to the investigation, complicating efforts to trace his movements. However, the lack of new evidence or sightings has left his case cold for decades. Authorities urge anyone with information to contact the Los Angeles Police Department, hoping that any detail, no matter how small, could help in resolving Jonke's disappearance.

Last Seen: Jun 8, 1983

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.

87%Strong
John Doe — California
UP4206 • Found Feb 11, 1985
View case
Sex ✓Male
Age 100%Est. 60–75 vs 68 when missing
Race 100%White
Location 100%11 mi away, same county
TimingFound 20 months after last seen
Height 100%5'5" vs 5'6"
Weight 98%105 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 100%Brown vs Brown
85%Strong
John Doe — Los Angeles, California
UP3925 • Found Dec 22, 1988
View case
Sex ✓Male
Age 100%Est. 65–75 vs 68 when missing
Race 100%White
Location 100%9 mi away, same county
TimingFound 6 years after last seen
Height 100%5'5"–5'9" vs 5'6"
Weight 83%140–165 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 100%Brown vs Brown
84%Moderate
John Doe — Los Angeles, California - unidentified case UP3846
John Doe — Los Angeles, California
UP3846 • Found Jul 25, 1991
View case
Sex ✓Male
Age 100%Est. 65–75 vs 68 when missing
Race 100%White
Location 98%19 mi away, same county
TimingFound 8 years after last seen
Height 100%5'5" vs 5'6"
Weight 74%145 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 100%Brown vs Brown
83%Moderate
John Doe — Carson, California
UP3709 • Found Jan 1, 1994
View case
Sex ✓Male
Age 100%Est. 70–80 vs 68 when missing
Race 100%White
Location 100%10 mi away, same county
TimingFound 11 years after last seen
Height 100%5'7" vs 5'6"
Weight 64%150 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 100%Brown vs Brown
82%Moderate
John Doe — California
UP3882 • Found Oct 3, 1990
View case
Sex ✓Male
Age 100%Est. 70–75 vs 68 when missing
Race 100%White
Location 100%11 mi away, same county
TimingFound 7 years after last seen
Height 84%5'8" vs 5'6"
Weight 91%135 lb vs 118 lb
Hair 100%Gray vs Gray
82%Moderate
John Doe — California
UP4208 • Found Feb 5, 1985
View case
Sex ✓Male
Age 85%Est. 50–70 vs 68 when missing
Race 100%White
Location 100%11 mi away, same county
TimingFound 20 months after last seen
Height 100%5'7" vs 5'6"
Weight 100%116 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 0%Blue vs Brown
82%Moderate
John Doe — California
UP4263 • Found Nov 9, 1983
View case
Sex ✓Male
Age 85%Est. 46–66 vs 68
Race 100%White
Location 100%11 mi away, same county
TimingFound 5 months after last seen
Height 100%5'5" vs 5'6"
Weight 81%95 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 0%Blue vs Brown
81%Moderate
John Doe — Los Angeles, California - unidentified case UP13458
John Doe — Los Angeles, California
UP13458 • Found Oct 7, 2014
View case
Sex ✓Male
Age 100%Est. 65–80 vs 68 when missing
Race 100%White
Location 100%11 mi away, same county
TimingFound 31 years after last seen
Height 100%5'6"–5'10" vs 5'6"
Weight 93%134 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 60%Hazel vs Brown
81%Moderate
John Doe — Los Angeles, California - unidentified case UP3512
John Doe — Los Angeles, California
UP3512 • Found Jun 16, 1996
View case
Sex ✓Male
Age 81%Est. 45–65 vs 68 when missing
Race 100%White
Location 99%13 mi away, same county
TimingFound 13 years after last seen
Height 100%5'6" vs 5'6"
Weight 100%121 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 100%Brown vs Brown
81%Moderate
John Doe — Anaheim, California - unidentified case UP7676
John Doe — Anaheim, California
UP7676 • Found Oct 18, 1991
View case
Sex ✓Male
Age 82%Est. 50–65 vs 68 when missing
Race 100%White
Location 95%28 mi away, same state
TimingFound 8 years after last seen
Height 100%5'7" vs 5'6"
Weight 100%116 lb vs 118 lb
Hair 100%Gray vs Gray
Eyes 100%Brown vs Brown

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.