The person at the center of this case
Marlane L Koue Castaneda
Missing Person · Open
13 years waiting · since 2012
Missing Person: Marlane L Koue Castaneda
Justice for Marlane L Koue Castaneda — the trail went cold in 2012, but the truth hasn't.
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Key leads to think about
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person
Lead #1What were the circumstances surrounding Marlane's disappearance on October 1, 2012?
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witness
Lead #2Were there any witnesses to Marlane's last known location or activities in Carlsbad?
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clue
Lead #3Has any physical evidence or credible sightings emerged in the years since her disappearance?
Marlane L Koue Castaneda, a 54-year-old woman, was last seen on October 1, 2012, in Carlsbad, San Diego, California. Despite over a decade of investigation by the Oceanside Police Department, her whereabouts remain unknown and the circumstances of her disappearance remain unclear. Anyone with information about Marlane's location or what happened to her is urged to contact authorities.
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Official wording
Source Narrative
NamUs case MP18159. Missing person: Marlane L Koue Castaneda.
Last known contact: 2012-10-01 in Carlsbad, San Diego, CA. Circumstances: Last seen on 10/01/2012 Demographics: 54 years, Female, White / Caucasian.
Physical description: 5 ft 3 in, 150 lbs, hair: Red/Auburn, eyes: Brown. Investigating agency: Oceanside Police Department | 12013655.
Timeline of Events
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2012-10-01
Last Known Contact
Marlane L Koue Castaneda was last seen on October 1, 2012, in Carlsbad, San Diego, California.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:October 1, 2012
Last Updated:June 3, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 7604354846
You can remain anonymous
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Case Information
Incident:October 1, 2012
Last Updated:June 3, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 7604354846
You can remain anonymous