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Case Description

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Summary based on the NamUs case record (MP132748)
In the autumn of 2017, 61-year-old Oscar Navas-Martinez disappeared from his life in Chicago, Illinois. He was last seen in the Jefferson Park area, a neighborhood on the Northwest Side of the city. At the time he went missing, Oscar was described as a Hispanic male, standing at five feet seven inches tall and weighing around 140 pounds, with both black hair and brown eyes. The last known contact with him occurred on November 27, 2017. Information surrounding his disappearance suggests that he may have been experiencing homelessness, a circumstance that can create additional vulnerabilities and make it more difficult for loved ones and authorities to track an individual's whereabouts.

Years passed without any official word or updates on Oscar's case. It wasn't until nearly four years after his last known contact, on October 3, 2021, that a missing person report was formally filed with the Chicago Police Department. This significant delay between when he was last seen and when he was officially reported missing can create substantial challenges in an investigation. Memories of potential witnesses can fade, and any physical evidence that might have existed could be long gone. The reasons for this delay in reporting are not publicly known, but it adds another layer of complexity to the efforts to find him.

The Chicago Police Department's Area Five detectives took on the case, but the trail had grown cold over the intervening years. The investigation into the disappearance of Oscar Navas-Martinez remains an open wound for those who knew him, a story without an ending. The overview of the case is one of quiet disappearance and delayed action, leaving a sparse timeline for investigators to follow. The central facts are his last known presence in Jefferson Park in late 2017, the possibility of his transient living situation, and the lengthy period before an official investigation was launched, all of which contribute to the difficulty in uncovering what happened to him.

Last Seen: Nov 27, 2017

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Possible Unidentified Matches (6)

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.

84%Moderate
John Doe — Delta charter Township, Michigan - unidentified case UP114356
John Doe — Delta charter Township, Michigan
UP114356 • Found Nov 13, 2023
View case
Sex ✓Male
Age 14%Est. 40–50 vs 61 when missing
Race 100%Hispanic
Location 62%167 mi away
TimingFound 6 years after last seen
Height 100%5'7" vs 5'7"
Weight 16%202 lb vs 140 lb
Hair 40%Gray vs Black
Eyes 100%Brown vs Brown
Name: remains tentatively named Oscar Martinez
82%Moderate
John Doe — Chicago, Illinois
UP97269 • Found Aug 23, 2022
View case
Sex ✓Male
Age 93%Est. 45–60 vs 61 when missing
Race 100%Hispanic
Location 100%7 mi away, same county
TimingFound 5 years after last seen
Height 100%5'6"–5'10" vs 5'7"
Weight 100%130 lb vs 140 lb
78%Possible
John Doe — Chicago, Illinois - unidentified case UP125425
John Doe — Chicago, Illinois
UP125425 • Found Jun 20, 2024
View case
Sex ✓Male
Age 93%Est. 45–60 vs 61 when missing
Race 100%Hispanic
Location 97%20 mi away, same county
TimingFound 7 years after last seen
Height 75%4'11"–5'7" vs 5'7"
Hair 100%Black vs Black
78%Possible
John Doe — Lemont, Illinois - unidentified case UP54761
John Doe — Lemont, Illinois
UP54761 • Found Dec 18, 2018
View case
Sex ✓Male
Age 85%Est. 40–60 vs 61 when missing
Race 60%White
Location 96%24 mi away, same county
TimingFound 13 months after last seen
Height 100%5'8" vs 5'7"
Weight 89%118 lb vs 140 lb
Hair 60%Brown vs Black
Eyes 100%Brown vs Brown
76%Possible
John Doe — Chicago, Illinois
UP108220 • Found Aug 31, 2023
View case
Sex ✓Male
Age 100%Est. 48–62 vs 61 when missing
Location 96%24 mi away, same county
TimingFound 6 years after last seen
Height 100%5'7" vs 5'7"
Weight 91%120 lb vs 140 lb
76%Possible
John Doe — Chicago, Illinois - unidentified case UP51609
John Doe — Chicago, Illinois
UP51609 • Found Jun 28, 2018
View case
Sex ✓Male
Age 85%Est. 45–65 vs 61
Race 60%White
Location 100%9 mi away, same county
TimingFound 7 months after last seen
Height 100%5'3"–5'8" vs 5'7"

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.