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 (MP5606) and 5 other sources
Andy Guy Nguyen, 24 years old at the time of his disappearance, was last seen on July 30, 1998, in Mountain View, California. Nguyen, a Vietnamese-American, stood at 5'11" and weighed approximately 130 pounds. He was last seen wearing a white t-shirt with "Vegas" printed in blue letters, blue dress pants, and black dress shoes. He was also carrying a large green backpack at the time. Notably, Nguyen had a diagnosed behavioral disorder, though the specific nature of this condition remains unclear.

Few details are available regarding the circumstances leading to Nguyen's disappearance. His last known whereabouts were in the Mountain View area, and since that day, no further sightings or communications have been reported. Despite efforts by the authorities and his case being classified as endangered missing, there has been little progress over the years in finding him.

Multiple agencies, including the Mountain View Police Department, continue to investigate Nguyen’s case. Available identifying information, such as dental records and DNA, have been recorded in the hope that they might lead to future breakthroughs. Despite these efforts, Nguyen's case remains unsolved, and public appeals for information persist.

Last Seen: Jul 30, 1998

Possible Unidentified Matches (3)

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.

77%Possible
John Doe — Grass Valley, California - unidentified case UP16793
John Doe — Grass Valley, California
UP16793 • Found Oct 18, 2002
View case
Sex ✓Male
Age 85%Est. 25–50 vs 24 when missing
Race 100%Asian
Location 67%139 mi away, same state
TimingFound 4 years after last seen
Height 100%5'11" vs 5'11"
Weight 89%150 lb vs 130 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
75%Possible
John Doe — Woodside, California - unidentified case UP97935
John Doe — Woodside, California
UP97935 • Found Sep 26, 2022
View case
Sex ✓Male
Age 100%Est. 45–60 vs 24 when missing
Race 100%Asian
Location 100%10 mi away, same state
TimingFound 24 years after last seen
Height 75%5'7"–6'3" vs 5'11"
75%Possible
John Doe — San Bruno, California
UP10648 • Found Jul 19, 2007
View case
Sex ✓Male
Age 82%Est. 35–45 vs 24 when missing
Race 100%Asian
Location 96%25 mi away, same state
TimingFound 9 years after last seen
Height 52%5'7" vs 5'11"
Weight 52%171 lb vs 130 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.