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Crime Solvers Central
302 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 (MP89692) and 3 other sources
Jon Kevin Neff, aged 34, went missing from Altamonte Springs, Florida, on June 15, 1997. On that morning, Neff left his parents' home on Spring Lake Road to go to his job as a cook at the First Watch restaurant, located nearby. Between 9:30 and 10:30 a.m., he called his workplace to inform them that he would be late, but he never arrived. Later that day, Neff also failed to pick up his daughter as planned, raising concerns among his family.

The next significant sighting of Neff came the following day when picnickers in a remote part of Seminole Forest, near the Wekiva River, spotted a man matching his description sitting in a blue 1986 Oldsmobile Calais. Though one of the witnesses considered approaching him, they ultimately decided against it. The vehicle was confirmed to belong to Neff, and it was later found locked and abandoned in the same spot. Inside, authorities discovered his pager on the front seat, but no signs of struggle or foul play were immediately evident.

An extensive search of the surrounding area yielded no clues as to Neff's whereabouts. At the time of his disappearance, Neff had been struggling with drug addiction, and there was an outstanding warrant for his arrest related to cocaine possession. While he had previously disappeared for brief periods, his prolonged absence without contacting his daughter was unusual, leading investigators to suspect that he may have met with foul play. Despite these suspicions, his case remains unsolved to this day.

Last Seen: Jun 15, 1997

Possible Unidentified Matches (7)

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.

82%Moderate
John Doe — Orlando, Florida - unidentified case UP531
John Doe — Orlando, Florida
UP531 • Found Dec 15, 1998
View case
Sex ✓Male
Age 100%Est. 25–40 vs 34 when missing
Race 100%White
Location 98%18 mi away, same state
TimingFound 18 months after last seen
Height 100%5'11" vs 5'10"
80%Moderate
John Doe — Orlando, Florida - unidentified case UP524
John Doe — Orlando, Florida
UP524 • Found Mar 4, 2002
View case
Sex ✓Male
Age 85%Est. 40–65 vs 34 when missing
Race 100%White
Location 100%6 mi away, same state
TimingFound 5 years after last seen
Height 100%5'9" vs 5'10"
Weight 100%188 lb vs 180–200 lb
Hair 40%Gray vs Blond
Eyes 30%Hazel vs Blue
77%Possible
John Doe — Jacksonville, Florida - unidentified case UP747
John Doe — Jacksonville, Florida
UP747 • Found Aug 28, 1998
View case
Sex ✓Male
Age 100%Est. 30–45 vs 34 when missing
Race 100%White
Location 73%112 mi away, same state
TimingFound 14 months after last seen
Height 100%5'10" vs 5'10"
76%Possible
John Doe — Orlando, Florida
UP7908 • Found Jul 22, 2010
View case
Sex ✓Male
Age 85%Est. 35–59 vs 34 when missing
Race 100%White
Location 97%21 mi away, same state
TimingFound 13 years after last seen
Height 100%5'9" vs 5'10"
75%Possible
John Doe — Kissimmee, Florida
UP16837 • Found Sep 29, 2016
View case
Sex ✓Male
Age 85%Est. 40–60 vs 34 when missing
Race 100%White
Location 96%25 mi away, same state
TimingFound 19 years after last seen
Height 100%5'9" vs 5'10"
75%Possible
John Doe — Winter Garden, Florida - unidentified case UP1027
John Doe — Winter Garden, Florida
UP1027 • Found Dec 8, 2004
View case
Sex ✓Male
Age 100%Est. 36–45 vs 34 when missing
Race 100%White
Location 99%15 mi away, same state
TimingFound 7 years after last seen
Height 52%5'6" vs 5'10"
75%Possible
John Doe — Ocala, Florida - unidentified case UP2911
John Doe — Ocala, Florida
UP2911 • Found Dec 30, 1997
View case
Sex ✓Male
Age 87%Est. 36–45 vs 34
Race 100%White
Location 89%51 mi away, same state
TimingFound 7 months after last seen
Height 52%5'6" vs 5'10"
Weight 82%144 lb vs 180–200 lb

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.