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298 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 (MP21820) and 2 other sources
In the spring of 1998, a man named Robert Leonard Longson, known to his loved ones as Bob or Bobby, vanished from Las Vegas, Nevada. At the time of his disappearance, he was 52 years old, with blond hair and blue eyes. He was known to wear eyeglasses. The last confirmed sighting of Robert was by his sister in May of that year. Following that final meeting, Robert's connection with his family ceased, and his whereabouts became a painful mystery. He was described as being approximately 5 feet 10 inches tall and weighing between 155 and 160 pounds. The circumstances surrounding his disappearance were not immediately clear, leaving his family with unanswered questions and growing concern.

Years passed without any significant leads in Robert's case. His sister, who was the last known family member to see him, could only report that his last known location was Las Vegas. The lack of communication was out of character, and as time stretched on, the hope of his safe return began to fade, replaced by a grim uncertainty. The Las Vegas Metropolitan Police Department opened an investigation into his disappearance, but the trail had grown cold. For a long time, there were no new developments, and the case remained one of many unsolved missing persons files in the state of Nevada. The silence and lack of information were a heavy burden for his family to bear.

A significant, though somber, development eventually emerged in the case when partial remains were discovered. While the specific details of when and where these remains were found are not widely publicized, their discovery shifted the focus of the investigation from a missing person case to a possible unidentified decedent case. This discovery prompted law enforcement to seek out familial DNA to aid in the identification process. Samples were provided by Robert's daughter and sister. These samples were processed and uploaded to national DNA databases, a crucial step in trying to bring closure to a family that had waited for answers for so long. The case of Robert Longson is an ongoing effort to piece together the final moments of his life and to understand the circumstances that led to him going missing.

Last Seen: May 1, 1998

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.

79%Possible
John Doe — Las Vegas, Nevada - unidentified case UP229
John Doe — Las Vegas, Nevada
UP229 • Found Jan 3, 2004
View case
Sex ✓Male
Age 100%Est. 55–65 vs 52 when missing
Race 100%White
Location 100%12 mi away, same county
TimingFound 6 years after last seen
Height 84%5'8" vs 5'10"
Weight 46%102 lb vs 155–160 lb
Hair 40%Gray vs Blond
78%Possible
John Doe — Henderson, Nevada
UP104115 • Found Dec 22, 2022
View case
Sex ✓Male
Age 100%Est. 38–52 vs 52 when missing
Race 100%White
Location 100%11 mi away, same county
TimingFound 25 years after last seen
Height 100%5'11" vs 5'10"
78%Possible
John Doe — Las Vegas, Nevada
UP6749 • Found Dec 28, 2008
View case
Sex ✓Male
Age 100%Est. 60–70 vs 52 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 11 years after last seen
Height 100%5'9" vs 5'10"
Hair 70%Gray vs Blond
Eyes 0%Brown vs Blue
78%Possible
John Doe — Lake Mead National Recreation, Arizona - unidentified case UP12252 View case
Sex ✓Male
Age 85%Est. 40–60 vs 52 when missing
Race 100%White
Location 92%40 mi away
TimingFound 11 years after last seen
Height 84%5'8" vs 5'10"
Weight 95%180 lb vs 155–160 lb
Hair 70%Gray vs Blond
Eyes 100%Blue vs Blue
78%Possible
John Doe — Henderson, Nevada
UP135976 • Found Nov 17, 2024
View case
Sex ✓Male
Age 100%Est. 58–72 vs 52 when missing
Race 100%White
Location 100%11 mi away, same county
TimingFound 27 years after last seen
Height 100%5'10"–6'2" vs 5'10"
77%Possible
John Doe — Las Vegas, Nevada - unidentified case UP11598
John Doe — Las Vegas, Nevada
UP11598 • Found Aug 29, 2013
View case
Sex ✓Male
Age 85%Est. 40–60 vs 52 when missing
Race 100%White
Location 100%3 mi away, same county
TimingFound 15 years after last seen
Height 100%5'9" vs 5'10"
Weight 100%141 lb vs 155–160 lb
Hair 50%Brown vs Blond
Eyes 0%Brown vs Blue
77%Possible
John Doe — Nevada
UP407 • Found Feb 11, 2006
View case
Sex ✓Male
Age 100%Est. 40–55 vs 52 when missing
Race 100%White
Location 100%11 mi away, same county
TimingFound 8 years after last seen
Height 68%5'7" vs 5'10"
76%Possible
John Doe — Las Vegas, Nevada - unidentified case UP50658
John Doe — Las Vegas, Nevada
UP50658 • Found Mar 29, 2018
View case
Sex ✓Male
Age 100%Est. 68–82 vs 52 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 20 years after last seen
Height 84%6'0" vs 5'10"
Weight 51%210 lb vs 155–160 lb
Hair 70%Gray vs Blond
Eyes 0%Brown vs Blue
76%Possible
John Doe — Las Vegas, Nevada
UP231 • Found Feb 25, 2005
View case
Sex ✓Male
Age 81%Est. 25–50 vs 52 when missing
Race 100%White
Location 100%6 mi away, same county
TimingFound 7 years after last seen
Height 68%6'1" vs 5'10"
Weight 93%181 lb vs 155–160 lb
Hair 50%Brown vs Blond
76%Possible
John Doe — Henderson, Nevada - unidentified case UP227
John Doe — Henderson, Nevada
UP227 • Found Dec 1, 2003
View case
Sex ✓Male
Age 83%Est. 30–50 vs 52 when missing
Race 100%White
Location 98%18 mi away, same county
TimingFound 6 years after last seen
Height 84%5'8" vs 5'10"

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.