The person at the center of this case
Blair Tonzelli
Missing Person · Open
3 years waiting · since 2023
Missing Person: Blair Tonzelli
Justice for Blair Tonzelli — the trail went cold in 2023, but the truth hasn't.
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Key leads to think about
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person
Lead #1What were the circumstances of Blair's last known contact on February 21, 2023?
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evidence
Lead #2Were there any witnesses who saw Blair on the day she went missing?
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location
Lead #3What specific locations in Philadelphia was Blair known to frequent?
Blair Tonzelli, a 35-year-old woman, went missing on February 21, 2023, in Philadelphia after her last known contact that day. She was last seen wearing gray sweats and a hooded sweatshirt. The Philadelphia Police Department Homicide Division continues to investigate the circumstances of her disappearance.
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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.
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clue
Lead #4Why is the Homicide Division investigating this missing person case?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP159856. Missing person: Blair Tonzelli.
Last known contact: 2023-02-21 in Philadelphia, Philadelphia, PA. Circumstances: Last contact was on 2/21/2023.
Demographics: 35 years, Female, White / Caucasian. Physical description: 5 ft 6 in, 130 lbs, hair: Blond/Strawberry, eyes: Green.
Clothing and accessories: Clothing: Gray sweats and a hooded sweatshirt. Investigating agency: Philadelphia Police Department - Homicide Division | O26-032 / DC#2023-24-011732 | 2026-06-19.
Timeline of Events
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2023-02-21
Last Known Contact
Blair Tonzelli was last known to have contact on February 21, 2023 in Philadelphia, Pennsylvania.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:February 21, 2023
Last Updated:August 13, 2026
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Phone: 2156863334
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Case Information
Incident:February 21, 2023
Last Updated:August 13, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2156863334
You can remain anonymous