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Cold Case Investigations

Read and review these cases and help us solve a Multnomah County Sheriff's Office cold case.

A cold case is an unsolved crime that has no active investigation and has exhausted all known leads. Cold cases can include homicides, missing person cases, and sexual assaults.

Cold cases may become active at any time, and our detectives are assigned cold cases to determine if there are any new and viable leads. Our hope is to bring justice and closure to victims and their families, no matter how long it takes. 

Please read and review these cases to see if you can help us solve a cold case.

If you have any information that may help detectives solve one of the cases below, email us or call 503-988-0560.

If you wish to report anonymously, please report tip to Crime Stoppers of Oregon.

A reward flyer printed on paper in 1958 showing photos of the family and describing the descriptions of the missing people
Martin Family
The disappearance of the Martin family

Police report number: 1958-57457

Reported missing date:  December 7, 1958

Missing persons:

  • Kenneth Martin, 54, 5' 10", 200 pounds, gray hair, crew cut, blue eyes, wears glasses
  • Barbara Jean…
Old photo of John Warner Nolan.
John Warner Nolen
Cold Case: 92-3882

On April 29, 1992, the body of an unidentified white male was discovered in the Columbia River by Kelley Point near the mouth of the Willamette River.

Date Discovered:
Age at Incident:
45
Gender:
Male
Portrait photo of Clarence Richards.
Charly Richards
Cold Case: 92-7937

Charly was last seen alive on August 21, 1992 when he left work at OHSU.

Date Discovered:
Age at Incident:
24
Gender:
Male
Race:
White
Portrait photo of Bonifacio Rodriguez-Rodriguez.
Bonifacio Rodriguez-Rodriguez
Cold Case: 94-6543

Bonifacio was last seen alive on the evening of September 25, 1994.

Date Discovered:
Age at Incident:
31
Gender:
Male
Race:
Hispanic

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