The person at the center of this case
Dean Muccillo
Missing Person · Open
180 days waiting
Missing Person: Dean Muccillo
Justice for Dean Muccillo — the trail went cold in 2026, but the truth hasn't.
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Key leads to think about
🔍
evidence
Lead #1Where did the bicycle accident occur and what hospital, if any, treated Dean for injuries?
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witness
Lead #2Did anyone witness the bicycle accident or see Dean after January 20, 2026?
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location
Lead #3What shelters, encampments, or locations in Anaheim was Dean known to frequent?
Dean Muccillo, a 57-year-old man experiencing homelessness in Anaheim, California, was last known to be in contact on January 20, 2026. His sister reported that he was involved in a bicycle accident around the time of his disappearance in February 2026, though the location of the accident and which hospital he may have been taken to remain unknown. Anyone with information about Dean's whereabouts or the circumstances of the accident is urged to contact the Anaheim Police Department.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
💡
clue
Lead #4Were there any hospital admissions matching Dean's description in late January or February 2026?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP159047. Missing person: Dean Muccillo.
Last known contact: 2026-01-20 in Anaheim, Orange, CA. Circumstances: Dean was last known to be experiencing homeless near Anaheim, CA.
According to his sister he was involved in a bicycle accident at an unknown location in February of 2026 at about the time he was reported missing. His sister was not sure where the accident occurred or what hospital he was taken to.
Demographics: 57 years, Male, White / Caucasian. Physical description: 5 ft 11 in, 170 lbs, hair: Brown, eyes: Brown.
Investigating agency: Anaheim Police Department | 26-23749 | 2026-02-18.
Timeline of Events
👁️
2026-01-20
Last Known Contact
Dean Muccillo was last known to be in contact in Anaheim, California while experiencing homelessness.
🕵️
2026-02-18
Case Reported to Police
Anaheim Police Department filed missing person report MP159047 on February 18, 2026.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:January 20, 2026
Last Updated:June 17, 2026
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Phone: 7147651900
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Case Information
Incident:January 20, 2026
Last Updated:June 17, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 7147651900
You can remain anonymous