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Home Historic/Cold Cases

Missing Woman Newmarket, ON – Tammy Lynn Lamondin‑Gagnon, 20, Last Seen May 28, 1999

06/27/2025
in Historic/Cold Cases
Reading Time: 4 mins read
Missing Woman Newmarket, ON – Tammy Lynn Lamondin‑Gagnon, 20, Last Seen May 28, 1999
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🚨 Missing Woman – May 28, 1999 – Newmarket, ON

📌 Description

Tammy Lynn Lamondin‑Gagnon was a 20‑year‑old Ojibwe woman from the Beausoleil First Nation who vanished under mysterious circumstances after midnight on May 29, 1999, in Newmarket, Ontario.

That evening, she was out with friends on Main Street and later attended a house party in Stouffville with a man named Pol Classen, who was the last person to see her. According to his account, he dropped Tammy off near Fairy Lake Park around 2 a.m.—that was the final confirmed sighting.

Despite a multi-agency response—including divers searching Fairy Lake, police sweeps, community volunteers, and private investigators—no trace of Tammy has ever been found. Pol Classen died by suicide a week later; he had been questioned and was considered a person of interest, but no charges were laid. His death left many unanswered questions.

  • Full Name: Tammy Lynn Lamondin‑Gagnon
  • Date of Birth: February 4, 1979
  • Age: 20
  • Height: 5′6″–5′8″ (170 cm)
  • Weight: approx. 105–110 lb (50 kg)
  • Hair: Short, wavy brown
  • Eyes: Blue
  • Distinguishing Marks: Dolphin tattoo above right ankle, navel piercing, multiple ear piercings; left‑handed.
  • Last Seen: Near Fairy Lake Park, just after 2 a.m., May 29, 1999

📞 How You Can Help

  • Contact York Regional Police Cold Case Unit at 1‑866‑876‑5423 ext 7865.
  • Submit anonymous tips to Crime Stoppers at 1‑800‑222‑TIPS (8477) or online at crimestoppers.ca.

🔗 Sources

  • Wikipedia – Tammy Lamondin‑Gagnon
  • Doe Network – Tammy Lamondin‑Gagnon
  • Someone Saw Something
  • York Regional Police – Cold Case Files
  • TVO – “Tammy’s Story” (2016)

👉 What You Can Do

  • Share Tammy’s story on social media to help raise awareness.
  • Encourage anyone with memories or information to speak with police—even anonymously.

💛 Help Us Continue This Work: Support us on Ko-fi.

Français ci-dessous

🚨 Femme portée disparue – 28 mai 1999 – Newmarket, ON

📌 Description

Tammy Lynn Lamondin‑Gagnon, une femme ojibwée de 20 ans de la Première Nation Beausoleil, a disparu dans des circonstances mystérieuses après minuit le 29 mai 1999 à Newmarket, Ontario.

Ce soir-là, elle était avec des amis sur la rue Main, puis a assisté à une fête à Stouffville avec Pol Classen, la dernière personne à l’avoir vue. Selon lui, il l’a déposée près de Fairy Lake Park vers 2 h du matin. C’est la dernière fois qu’elle a été vue.

Malgré les recherches de la police, de plongeurs, de bénévoles et même d’un détective privé, aucun indice n’a été retrouvé. Pol Classen s’est suicidé une semaine plus tard. Il était considéré comme une personne d’intérêt, mais n’a jamais été accusé, et sa mort a laissé beaucoup de questions sans réponse.

  • Nom complet : Tammy Lynn Lamondin‑Gagnon
  • Date de naissance : 4 février 1979
  • Âge : 20 ans
  • Taille : 1,70 m
  • Poids : Environ 50 kg
  • Cheveux : Bruns, courts et ondulés
  • Yeux : Bleus
  • Signes distinctifs : Tatouage de dauphin à la cheville droite, piercing au nombril, plusieurs piercings aux oreilles; gauchère.
  • Dernière vue : Près de Fairy Lake Park, vers 2 h, 29 mai 1999

📞 Comment aider

  • Communiquez avec l’unité des cas non résolus de la police régionale de York au 1‑866‑876‑5423, poste 7865.
  • Transmettez toute information de façon anonyme à Échec au crime au 1‑800‑222‑8477 ou en ligne sur echecaucrime.ca.

🔗 Sources

  • Wikipédia – Tammy Lamondin‑Gagnon
  • Doe Network – Tammy Lamondin‑Gagnon
  • Someone Saw Something
  • Police régionale de York – Cas non résolus
  • TVO – « Tammy’s Story » (2016)

👉 Ce que vous pouvez faire

  • Partagez son histoire pour maintenir l’attention publique.
  • Encouragez toute personne ayant des souvenirs ou des informations à contacter les autorités.

💛 Aidez-nous à poursuivre ce travail : Soutenez-nous sur Ko-fi.

Tags: Cold CaseNewmarketONOntario
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