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Frederick Sigo Missing Person Case

Last seen in Port Orchard, Washington on Nov 26, 1986

Victim Details

Feb 19, 2019

Mar 18, 2024

Frederick

Sigo

61

22

65 inches

130 lbs

American Indian / Alaska Native

Male

Nov 26, 1986

Port Orchard

Washington

Kitsap County

98366

No

47297

Kitsap County Sheriff's Office

Port Orchard

Washington

Kitsap County

98366

Dave Meyer

Detective

614 Division Street MS-37, Washington

3603377101

County

Law Enforcement

https://www.kitsapgov.com/sheriff/Pages/default.aspx

K86-014217

Dec 13, 1986

Kitsap County Sheriff's Office

9810

Brown

Brown

Brown

Oct 10, 2026


Area Last Seen:

Case Description

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Summary based on the NamUs case record (MP55525) and 6 other sources
In the fall of 1986, on the day before Thanksgiving, 22-year-old Frederick J. Sigo, a member of the Suquamish Indian Tribe, was seen outside his father's home in Port Orchard, Washington. He was in the company of an unidentified white male. This would be the last confirmed sighting of Frederick. Since that day, November 26, 1986, he has not been seen or heard from again. At the time of his disappearance, Frederick was described as a Native American male with brown hair and brown eyes, standing at 5'5' and weighing 130 pounds.

The circumstances surrounding Frederick's disappearance remain shrouded in mystery, with very little information available to the public or to investigators. The identity of the man he was last seen with has never been established, and no significant leads have emerged in the decades since he vanished. The case was officially reported to the Kitsap County Sheriff's Office on December 13, 1986. Despite the passage of time, law enforcement continues to seek any information that might shed light on what happened to him.

The lack of media attention on Frederick's case has made it one of the many long-standing and unresolved missing persons cases in the region. For his family and community, the years have been filled with unanswered questions and the persistent hope for closure. The investigation into Frederick Sigo's disappearance is ongoing, a cold case that serves as a painful reminder of a young man who vanished without a trace, leaving behind a void and a story with no ending.
Last Seen: Nov 26, 1986

Links to Additional Sources (6)

See any mistakes? Let us know!
  • Frederick J. Sigo - The Charley Project
  • Missing Person / NamUs #MP55525 - Office of Justice Programs
  • NGO non-governmental organization | Frederick Sigo, STILL ...
  • Missing Frederick J Sigo age 22 1986 Port Orchard, Washington
  • Frederick John Sigo
  • Missing Person Flyer: Frederick Sigo | Port Orchard, WA - CaseTrace

    • 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.

    75%Possible
    John Doe — Mount Rainier, Washington
    UP5704 • Found Sep 26, 1987
    View case
    Sex ✓Male
    Age 100%Est. 20–30 vs 22
    Location 86%60 mi away, same state
    TimingFound 10 months after last seen
    Height 84%5'7" vs 5'5"
    Weight 100%130 lb vs 130 lb
    Hair 60%Black 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.

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    Forum Posts (2)

    Anyone else notice how little media coverage Frederick Sigo’s case has gotten? It's been nearly 37... ...Read More
    11/29/2024
    Hey everyone, I’ve been diving into the case of Frederick Sigo, who went missing back in '86 from... ...Read More
    07/30/2024

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