Simon Dufort-Chouinard unsuccessfully tried to regain his freedom during legal proceedings.
• Read more: Tragedy in Rivière-au-Renard: Two young men killed by jealousy
• Read more: Rivière-au-Renard tragedy: second suspect charged with attempted murder
• Read more: Clash at Rivière-au-Renard in May: Manslaughter charges filed
The individual faces charges of manslaughter and dangerous driving following a violent, double-fatal collision in the Rivière-au-Renard sector in Gaspé last May.
The accused’s lawyer tried to convince the judge to grant acquittal at the High Court in Persey on Thursday.
The 18-year-old’s grandparents broke down in tears following the verdict.
A publication ban prevents disclosure of testimony heard in court.
The file will be returned on December 11.
Two weeks ago, her father, Marc-Jules Choinard, who was accused of being involved in the tragedy, was able to regain his freedom on the condition that he set a large bail and respect ten conditions.