Crime Solvers Central
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 (MP671) and 9 other sources
On a spring evening, May 21, 1998, a 20-year-old male named Jack Libardo Jimenez vanished from Mastic Beach, a community in Suffolk County, New York. That night, Jack was seen at approximately 10:30 p.m. in front of the D&K Deli, situated near the intersection of Neighborhood Road and Oakwood Drive. According to accounts, he got into a vehicle, possibly a black truck or a black Ford Bronco, which had multiple occupants inside. At the time of his disappearance, Jack was described as a biracial or Hispanic male, standing at 5'8' and weighing around 183 pounds, with black hair and brown eyes. He had several distinct features, including a scar on the left side of his forehead, a pierced nose, and a pierced tongue. He was last seen wearing a white Tommy Hilfiger shirt, blue jeans, a black leather winter jacket, and brown Lugz boots.

The circumstances leading up to Jack's disappearance remain shrouded in uncertainty. Earlier that evening, he had been visiting a female friend. This friend reported that after they spent some time together, Jack left to walk home. She witnessed him walking down the road before a vehicle pulled up near the deli and he appeared to get inside. Concerns for his well-being grew as he was never heard from again. Adding to the distress of his loved ones, his personal items, such as his beeper and wallet which he usually carried, were found in the room he was renting. This discovery suggested he may have returned home at some point, though this has never been confirmed.

The investigation into Jack's disappearance has been long and fraught with troubling details and unanswered questions. His family and friends firmly believe he would not have left voluntarily without contacting his brother, leading them to suspect foul play. This belief was bolstered by a disturbing discovery made shortly after he went missing: a shirt, believed to be Jack's and covered in what appeared to be blood, was found on a local beach. Although friends were alerted and saw the shirt, law enforcement reportedly could not locate it after being notified. Further complicating the case is a letter Jack sent to his cousin in Colombia about a week before he vanished. In the letter, he expressed being in some kind of trouble and needing to leave, vaguely mentioning he would be 'at the lighthouse,' a location his cousin did not understand. The case of Jack Jimenez is a painful puzzle of conflicting reports and a lack of definitive evidence, leaving a family searching for answers for decades. The Suffolk County Police Department continues to hold the case file, a reminder of a young man who disappeared into the night.

Last Seen: May 21, 1998

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.

83%Moderate
John Doe — New York, New York - unidentified case UP6071
John Doe — New York, New York
UP6071 • Found Aug 8, 2000
View case
Sex ✓Male
Age 100%Est. 16–20 vs 20 when missing
Race 100%White
Location 87%59 mi away, same state
TimingFound 2 years after last seen
Height 84%5'11" vs 6'1"
Weight 89%156 lb vs 185 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
82%Moderate
John Doe — Queens, New York - unidentified case UP5980
John Doe — Queens, New York
UP5980 • Found Sep 28, 2001
View case
Sex ✓Male
Age 100%Est. 20–35 vs 20 when missing
Race 100%White
Location 89%49 mi away, same state
TimingFound 3 years after last seen
Height 100%6'0" vs 6'1"
Weight 76%226 lb vs 185 lb
Hair 60%Brown vs Black
Eyes 100%Brown vs Brown
82%Moderate
John Doe — New York, New York - unidentified case UP6049
John Doe — New York, New York
UP6049 • Found May 15, 2000
View case
Sex ✓Male
Age 100%Est. 20–35 vs 20 when missing
Race 100%White
Location 87%59 mi away, same state
TimingFound 24 months after last seen
Height 84%5'11" vs 6'1"
Weight 60%132 lb vs 185 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
81%Moderate
John Doe — Queens, New York - unidentified case UP6313
John Doe — Queens, New York
UP6313 • Found Aug 30, 1998
View case
Sex ✓Male
Age 100%Est. 20–30 vs 20
Race 100%White
Location 89%49 mi away, same state
TimingFound 3 months after last seen
Weight 100%190 lb vs 185 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
79%Possible
John Doe — Brooklyn, New York - unidentified case UP8825
John Doe — Brooklyn, New York
UP8825 • Found Mar 16, 2011
View case
Sex ✓Male
Age 100%Est. 18–30 vs 20 when missing
Race 100%White
Location 87%58 mi away, same state
TimingFound 13 years after last seen
Height 68%5'10" vs 6'1"
Weight 100%168 lb vs 185 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
78%Possible
John Doe — Brooklyn, New York - unidentified case UP5668
John Doe — Brooklyn, New York
UP5668 • Found Jun 17, 2004
View case
Sex ✓Male
Age 66%Est. 30–50 vs 20 when missing
Race 100%White
Location 87%58 mi away, same state
TimingFound 6 years after last seen
Height 100%6'0" vs 6'1"
Weight 100%170 lb vs 185 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
77%Possible
John Doe — New Jersey
UP8722 • Found Apr 21, 2011
View case
Sex ✓Male
Age 85%Est. 31–51 vs 20 when missing
Race 100%White
Location 85%65 mi away
TimingFound 13 years after last seen
Height 100%6'1" vs 6'1"
Weight 77%225 lb vs 185 lb
Hair 60%Brown vs Black
Eyes 100%Brown vs Brown
77%Possible
John Doe — Jersey City, New Jersey - unidentified case UP6785
John Doe — Jersey City, New Jersey
UP6785 • Found Jul 29, 2008
View case
Sex ✓Male
Age 100%Est. 30–45 vs 20 when missing
Race 100%White
Location 86%62 mi away
TimingFound 10 years after last seen
Height 100%6'2" vs 6'1"
Weight 94%209 lb vs 185 lb
Hair 60%Brown vs Black
Eyes 0%Blue vs Brown
77%Possible
John Doe — New York, New York - unidentified case UP5231
John Doe — New York, New York
UP5231 • Found Jun 7, 2008
View case
Sex ✓Male
Age 100%Est. 30–45 vs 20 when missing
Race 100%White
Location 86%61 mi away, same state
TimingFound 10 years after last seen
Height 84%5'11" vs 6'1"
Weight 100%181 lb vs 185 lb
Hair 60%Brown vs Black
75%Possible
John Doe — Hollis, New York - unidentified case UP17867
John Doe — Hollis, New York
UP17867 • Found Apr 3, 2018
View case
Sex ✓Male
Age 85%Est. 40–60 vs 20 when missing
Race 100%White
Location 90%48 mi away, same state
TimingFound 20 years after last seen
Height 100%6'2" vs 6'1"
Weight 49%245 lb vs 185 lb
Hair 60%Brown vs Black
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.