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Andrew Mantheiy Missing Person Case

Last seen in Redding, California on May 19, 1977

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Victim Details

Feb 21, 2014

Jan 23, 2024

Andrew

Mantheiy

66

17

69 inches

70 inches

125 lbs

White / Caucasian

Male

May 19, 1977

Redding

California

Shasta County

14914

Shasta County Sheriff's Office

Redding

California

Shasta County

96001

300 Park Marina Circle, California

5302456025

County

Law Enforcement

https://www.shastacounty.gov/sheriff

77-16371

Shasta County Sheriff's Office

Brown

Blue

Blue

Oct 9, 2026


Area Last Seen:

Case Description

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Summary based on the NamUs case record (MP23609) and 7 other sources
Andrew Paul Mantheiy, age 17, was last seen on May 19, 1977, in Redding, California. On that day, he was observed walking northbound along Interstate 5. Originally from Texas, Andrew had moved to California, and his mother had passed away the previous year in 1976. Despite thorough investigations, no significant clues have emerged regarding his whereabouts, and his case remains unsolved.

Andrew is described as a Caucasian male with brown hair and blue eyes, standing between 5'9" and 5'10", and weighing around 125 pounds at the time of his disappearance. Authorities have classified his case as endangered missing, and DNA is available for identification purposes. However, little additional information has been discovered since the day he went missing, and the circumstances surrounding his disappearance remain unclear.

The Shasta County Sheriff's Department continues to handle the case, and anyone with potential information is urged to come forward to assist in resolving this decades-old mystery.
Last Seen: May 19, 1977

Links to Additional Sources (7)

See any mistakes? Let us know!
  • Andrew Mantheiy | International Missing Persons Wiki - Fandom
  • 5746DMCA - Andrew Paul Mantheiy - Doe Network
  • Andrew Paul Mantheiy - The Charley Project
  • Missing Person / NamUs #MP23609
  • Andrew Paul Mantheiy
  • Andrew Paul Mantheiy Has Been Missing Since 1977. Have You ...
  • [DOC] MISSING PERSON Andrew Paul Mantheiy - For the Lost

    • 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.

    75%Possible
    John Doe — McKinleyville, California
    UP53922 • Found Jan 26, 1986
    View case
    Sex ✓Male
    Age 100%Est. 16–20 vs 17 when missing
    Race 100%White
    Location 78%89 mi away, same state
    TimingFound 9 years after last seen
    Height 100%5'8"–5'11" vs 5'9"–5'10"
    75%Possible
    John Doe — Berkeley, California - unidentified case UP53302
    John Doe — Berkeley, California
    UP53302 • Found Mar 19, 1985
    View case
    Sex ✓Male
    Age 100%Est. 20–30 vs 17 when missing
    Race 100%White
    Location 57%188 mi away, same state
    TimingFound 8 years after last seen
    Height 100%5'10" vs 5'9"–5'10"
    Weight 100%137 lb vs 125 lb
    Hair 100%Brown vs Brown
    75%Possible
    John Doe — Sacramento, California
    UP2404 • Found May 12, 1982
    View case
    Sex ✓Male
    Age 100%Est. 20–30 vs 17 when missing
    Race 100%White
    Location 61%172 mi away, same state
    TimingFound 5 years after last seen
    Height 100%5'10" vs 5'9"–5'10"
    Weight 88%145 lb vs 125 lb
    Hair 100%Brown vs Brown
    Eyes 0%Brown vs Blue

    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.

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    Forum Posts (3)

    I wanted to bring up something about Andrew Paul Mantheiy's case that I haven’t seen discussed much.... ...Read More
    03/24/2024
    Has anyone ever looked into the train lines near Interstate 5 where Andrew Mantheiy was last seen? I... ...Read More
    08/29/2023
    Has anyone done a deep dive into Andrew Paul Mantheiy's history in Texas before he moved to... ...Read More
    06/13/2023

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