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
👁️
witness
Lead #1What specific details did the friend who reported her missing provide about their last contact?
🔍
evidence
Lead #2Were there any communications, messages, or digital activity from Blair after February 21, 2023?
💡
clue
Lead #3Why was the Homicide Division assigned to investigate rather than a missing persons unit?
Blair Tonzelli, a 35-year-old woman, was reported missing on February 21, 2023, in Philadelphia after last being in contact with a friend. She was last seen wearing gray sweats and a hooded sweatshirt. The Philadelphia Police Department Homicide Division is actively investigating her disappearance, and anyone with information about her whereabouts is urged to come forward.
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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.
📞
contact
Lead #4Has anyone seen a 5'6" blonde woman in gray sweats and a hooded sweatshirt in Philadelphia since February 21, 2023?
Have information about any of these leads?
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: Complainant reported missing by friend.
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
👁️
2023-02-21
Last Known Contact
Blair Tonzelli was last in contact with a friend in Philadelphia, PA.
👤
2023-02-21
Reported Missing
Blair Tonzelli was reported missing by a friend on February 21, 2023.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:February 21, 2023
Last Updated:July 2, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2156863334
You can remain anonymous
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Case Information
Incident:February 21, 2023
Last Updated:July 2, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2156863334
You can remain anonymous