Event date : May 20, 1975
On May 20, 1975, at around 8:15 p.m., Diane Déry, age 13, and Mario Corbeil, age 15, left Diane’s home to go for a motorcycle ride in a field near boulevard Rolland-Therrien in Longueuil. Seeing that the young people had not returned, family members of the two teenagers searched the area during the evening and night.
The next morning, at around 7:20 a.m., the police found the lifeless bodies of Diane Déry and Mario Corbeil in a wooded area at the end of boulevard Rolland-Therrien. The crime scene analysis showed that the two young people were murdered.
If you have any information that could help solve this crime, contact the Centrale de l’information criminelle of the Sûreté du Québec at 1 800 659-4264.