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 (MP11653) and 3 other sources
Keisuke Koizumi, a 22-year-old Japanese student, was last seen on April 23, 2008, in San Francisco, California, where he was attending a language school. He left his hotel room, telling his roommate that he was going to deliver a computer monitor to a friend, but he never returned. All of his belongings were left behind in the hotel room he shared with another student.

There are concerns that Koizumi may have been suffering from depression at the time, and he was possibly taking anti-depressant medication. He was last seen wearing a white long-sleeved t-shirt, a gray argyle sweater, a light-colored olive green jacket, blue jeans, and white Converse sneakers. Despite investigations, no further details about his whereabouts have surfaced, and he remains missing. The San Francisco Police Department continues to handle the case, but very few leads have been developed since his disappearance.
Last Seen: Apr 23, 2008

Possible Unidentified Matches (1)

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.

76%Possible
John Doe — Muir Beach, California - unidentified case UP14895
John Doe — Muir Beach, California
UP14895 • Found Mar 3, 2016
View case
Sex ✓Male
Age 100%Est. 25–35 vs 22 when missing
Race 100%Asian
Location 100%8 mi away, same state
TimingFound 8 years after last seen
Height 36%5'4" vs 5'9"
Weight 13%160 lb vs 110 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.