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
👁️
witness
Lead #1Were there any witnesses who saw Marlane on or around October 1, 2012, in Carlsbad?
💡
clue
Lead #2What were the circumstances of her disappearance and why was she in Carlsbad that day?
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contact
Lead #3Has anyone had contact with Marlane since October 1, 2012, or received any communication from her?
Marlane L Koue Castaneda, a 54-year-old woman, was last seen on October 1, 2012, in Carlsbad, San Diego, California. Her disappearance circumstances remain unclear, and no significant leads have been publicly reported in over a decade. Anyone with information about her whereabouts is urged to contact the Oceanside Police Department.
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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
👁️
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
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Any information, no matter how small, could be crucial to solving this case.
Phone: 7604354846
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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