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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 (MP107781) and 2 other sources
In the late spring of 2021, a sense of unease settled over a family and community in Brentwood, New York, with the disappearance of Octavio Rivera. On June 18th of that year, the 52-year-old man was last seen in the Suffolk County hamlet. The circumstances surrounding his last known moments are not widely publicized, leaving a void of information for those concerned for his welfare. Rivera, a Hispanic and White/Caucasian male, was a familiar face in his community, and his sudden absence created more questions than answers. At the time he went missing, he was described as being 5 feet 9 inches tall and weighing approximately 160 pounds, with black hair and brown eyes.

The days turned into weeks, and then months, with no sign of Octavio Rivera. The lack of information available to the public regarding his case has been a significant hurdle in understanding the events leading up to his disappearance. Details about his life, his relationships, and his state of mind at the time he went missing have not been shared in public forums, which can often be crucial in generating leads from the community. The clothing he was wearing on the day he was last seen is unknown, further complicating the efforts of those who might have unknowingly crossed his path.

The investigation into Octavio Rivera's whereabouts is being handled by the Suffolk County Police Department's Third Precinct. His case is cataloged under the number 21-312936 and is also listed in the National Missing and Unidentified Persons System as case number MP107781. Despite these official records, the public narrative of his case has remained sparse. Without media coverage or public appeals for information, the case has largely remained out of the public eye. This lack of a detailed public account of the investigation, search efforts, and any potential leads has left a painful silence for those who knew him. The overview of this case is one of quiet uncertainty, a man who seemingly vanished without a trace, leaving behind a family and community to grapple with the ambiguity of his fate.

Last Seen: Jun 18, 2021

Links to Additional Sources (2)

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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.

85%Strong
John Doe — Manhattan, New York - unidentified case UP140932
John Doe — Manhattan, New York
UP140932 • Found Mar 3, 2025
View case
Sex ✓Male
Age 100%Est. 50–60 vs 52 when missing
Race 100%Hispanic
Location 92%39 mi away, same state
TimingFound 4 years after last seen
Height 100%5'9" vs 5'9"
Weight 91%183 lb vs 160 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
82%Moderate
John Doe — Queens, New York - unidentified case UP106663
John Doe — Queens, New York
UP106663 • Found Jul 24, 2023
View case
Sex ✓Male
Age 85%Est. 40–60 vs 52 when missing
Race 100%Hispanic
Location 95%29 mi away, same state
TimingFound 2 years after last seen
Height 100%5'8" vs 5'9"
Weight 100%168 lb vs 160 lb
Hair 40%Gray vs Black
Eyes 100%Brown vs Brown
82%Moderate
John Doe — Brooklyn, New York - unidentified case UP133644
John Doe — Brooklyn, New York
UP133644 • Found Oct 14, 2024
View case
Sex ✓Male
Age 100%Est. 45–60 vs 52 when missing
Race 100%Hispanic
Location 92%39 mi away, same state
TimingFound 3 years after last seen
Height 100%5'8" vs 5'9"
Weight 76%125 lb vs 160 lb
Hair 40%Gray vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Queens, New York - unidentified case UP94144
John Doe — Queens, New York
UP94144 • Found Jul 29, 2022
View case
Sex ✓Male
Age 83%Est. 30–50 vs 52 when missing
Race 100%Hispanic
Location 94%31 mi away, same state
TimingFound 13 months after last seen
Height 68%5'6" vs 5'9"
Weight 91%137 lb vs 160 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Jamaica, New York - unidentified case UP86121
John Doe — Jamaica, New York
UP86121 • Found Oct 17, 2021
View case
Sex ✓Male
Age 85%Est. 35–55 vs 52
Race 100%Hispanic
Location 95%29 mi away, same state
TimingFound 4 months after last seen
Height 52%5'5" vs 5'9"
Weight 100%153 lb vs 160 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Staten Island, New York - unidentified case UP82373
John Doe — Staten Island, New York
UP82373 • Found Jul 8, 2021
View case
Sex ✓Male
Age 84%Est. 35–50 vs 52
Race 100%Hispanic
Location 89%50 mi away, same state
TimingFound 3 weeks after last seen
Height 84%5'7" vs 5'9"
Weight 65%203 lb vs 160 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Staten Island, New York - unidentified case UP84078
John Doe — Staten Island, New York
UP84078 • Found May 26, 2021
View case
Sex ✓Male
Age 84%Est. 35–50 vs 52
Race 100%Hispanic
Location 90%47 mi away, same state
TimingFound same day as last seen
Height 68%5'6" vs 5'9"
Weight 98%178 lb vs 160 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Manhattan, New York - unidentified case UP154360
John Doe — Manhattan, New York
UP154360 • Found Dec 31, 2025
View case
Sex ✓Male
Age 100%Est. 50–60 vs 52 when missing
Race 100%Hispanic
Location 93%36 mi away, same state
TimingFound 5 years after last seen
Height 68%5'6" vs 5'9"
Weight 100%149 lb vs 160 lb
Hair 60%Brown vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Asbury Park, New Jersey
UP160155 • Found Aug 4, 2024
View case
Sex ✓Male
Age 85%Est. 50–70 vs 52 when missing
Race 100%Hispanic
Location 88%56 mi away
TimingFound 3 years after last seen
Height 100%5'8" vs 5'9"
Weight 100%152 lb vs 160 lb
Hair 40%Gray vs Black
Eyes 100%Brown vs Brown
78%Possible
John Doe — Queens, New York - unidentified case UP115204
John Doe — Queens, New York
UP115204 • Found Dec 26, 2023
View case
Sex ✓Male
Age 100%Est. 45–55 vs 52 when missing
Race 60%White
Location 94%32 mi away, same state
TimingFound 3 years after last seen
Height 68%5'6" vs 5'9"
Weight 100%147 lb vs 160 lb
Hair 100%Black 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.