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 (MP13201) and 5 other sources
Ronald David Sisneros, known to his loved ones as Ronnie, was a 25-year-old man whose life took an unforeseen turn on January 28, 1993. On that winter evening in Denver, Colorado, Ronnie was at a party with friends. He reportedly left the gathering with the intention of going to another friend's home. However, he never made it to his destination and has not been seen or heard from since. At the time of his disappearance, he was described as a Hispanic male with brown hair and brown eyes. He had his left ear pierced and several distinct tattoos, including a cross on his hand and a ribbon with the letters 'MO' on his left forearm. He also had a number of scars on his abdomen, chest, and arms. When he was last seen, he was wearing blue jeans and a brown jacket.

The circumstances surrounding Ronald's disappearance are shrouded in uncertainty, with few details available to the public. It is known that at the time he went missing, he had been struggling with alcohol and drug use. He was also known to sometimes use the alias Juan Saucedo. The official report of his disappearance was filed with the Denver Police Department on February 11, 1993. Despite the passage of time, the investigation into his whereabouts has yielded little information, leaving his family and friends with unanswered questions.

The case of Ronald Sisneros remains an open and painful chapter for those who knew him. Classified as an endangered missing person, his disappearance has left a void in the lives of his loved ones. The lack of concrete leads or new information over the decades has made the search for answers increasingly difficult. The overview of this case is one of a young man who vanished after leaving a party, with a history of personal struggles that may or may not be connected to his disappearance. The few available details paint a picture of a person with distinct physical characteristics, yet these clues have not been enough to solve the mystery of what happened to Ronald David Sisneros.

Last Seen: Jan 28, 1993

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.

86%Strong
John Doe — Denver, Colorado - unidentified case UP7173
John Doe — Denver, Colorado
UP7173 • Found Jan 8, 1997
View case
Sex ✓Male
Age 100%Est. 20–25 vs 25 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 4 years after last seen
Height 100%5'7" vs 5'0"–5'6"
Weight 90%160 lb vs 125–140 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
83%Moderate
John Doe — Boulder, Colorado - unidentified case UP517
John Doe — Boulder, Colorado
UP517 • Found Nov 21, 1993
View case
Sex ✓Male
Age 85%Est. 25–45 vs 25
Race 100%White
Location 96%25 mi away, same state
TimingFound 10 months after last seen
Height 100%5'5" vs 5'0"–5'6"
Weight 90%160 lb vs 125–140 lb
Hair 100%Brown vs Brown
80%Moderate
John Doe — Fort Lupton, Colorado
UP71876 • Found Aug 12, 1995
View case
Sex ✓Male
Age 100%Est. 18–32 vs 25 when missing
Location 97%23 mi away, same state
TimingFound 3 years after last seen
Height 100%5'4"–5'8" vs 5'0"–5'6"
Weight 82%100 lb vs 125–140 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Glendale, Colorado - unidentified case UP11476
John Doe — Glendale, Colorado
UP11476 • Found Feb 10, 1998
View case
Sex ✓Male
Age 100%Est. 25–30 vs 25 when missing
Race 100%White
Location 100%4 mi away, same state
TimingFound 5 years after last seen
Height 84%5'8" vs 5'0"–5'6"
Weight 22%196 lb vs 125–140 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Fort Collins, Colorado - unidentified case UP4813
John Doe — Fort Collins, Colorado
UP4813 • Found Sep 16, 1994
View case
Sex ✓Male
Age 100%Est. 25–35 vs 25 when missing
Race 100%White
Location 87%58 mi away, same state
TimingFound 20 months after last seen
Height 68%5'9" vs 5'0"–5'6"
Weight 100%140 lb vs 125–140 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
78%Possible
John Doe — Aurora, Colorado - unidentified case UP16278
John Doe — Aurora, Colorado
UP16278 • Found Dec 13, 2016
View case
Sex ✓Male
Age 93%Est. 50–60 vs 25 when missing
Race 100%White
Location 100%7 mi away, same state
TimingFound 24 years after last seen
Height 100%5'6" vs 5'0"–5'6"
Weight 32%191 lb vs 125–140 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
76%Possible
John Doe — Denver, Colorado
UP7172 • Found Jan 26, 1996
View case
Sex ✓Male
Age 81%Est. 30–45 vs 25 when missing
Race 60%Hispanic
Location 100%4 mi away, same county
TimingFound 3 years after last seen
Height 100%5'5" vs 5'0"–5'6"
Weight 100%150 lb vs 125–140 lb
76%Possible
John Doe — Commerce City, Colorado
UP153308 • Found Jun 5, 2023
View case
Sex ✓Male
Age 60%Est. 18–100 vs 25 when missing
Race 100%White
Location 100%11 mi away, same state
TimingFound 30 years after last seen
Height 100%5'5" vs 5'0"–5'6"
Weight 100%146 lb vs 125–140 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
75%Possible
John Doe — Fort Collins, Colorado - unidentified case UP454
John Doe — Fort Collins, Colorado
UP454 • Found Jul 12, 1997
View case
Sex ✓Male
Age 100%Est. 18–30 vs 25 when missing
Race 100%White
Location 87%58 mi away, same state
TimingFound 4 years after last seen
Height 36%5'11" vs 5'0"–5'6"
Weight 90%160 lb vs 125–140 lb
Hair 100%Brown vs Brown
75%Possible
John Doe — Rural, New Mexico
UP9791 • Found Oct 12, 1995
View case
Sex ✓Male
Age 100%Est. 25–30 vs 25 when missing
Race 100%White
Location 46%287 mi away
TimingFound 3 years after last seen
Height 84%5'8" vs 5'0"–5'6"
Weight 100%138 lb vs 125–140 lb
Hair 100%Brown vs Brown
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.