The person at the center of this case
Dean Muccillo
Missing Person · Open
270 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 exactly did the bicycle accident occur, and which hospital or medical facility treated Dean if he was injured?
👁️
witness
Lead #2Did anyone witness the bicycle accident in February 2026 or see Dean after the accident?
📍
location
Lead #3What specific areas of Anaheim was Dean frequenting while homeless before his disappearance?
Dean Muccillo, a 57-year-old man experiencing homelessness, was last known to be in contact on January 20, 2026, in Anaheim, California. 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. The Anaheim Police Department is investigating, and clarifying details about the accident and his whereabouts afterward could be critical to locating him.
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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 #4Hospital records or emergency room visits in the Anaheim area around February 2026 could help locate Dean or confirm his condition.
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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, Orange County, CA. He was experiencing homelessness at this time.
🕵️
2026-02-18
Case Reported to Police
Anaheim Police Department opened investigation case MP159047 / 26-23749 after Dean was reported missing.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:January 20, 2026
Last Updated:September 26, 2026
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Phone: 7147651900
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Case Information
Incident:January 20, 2026
Last Updated:September 26, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 7147651900
You can remain anonymous