JUSTIN Bos, 39, has been convicted and sentenced for manufacturing of restricted firearms, the manslaughter with a firearm of Cody Mostat in March 2022 and the manslaughter of Troy Regnier in August 2022.
On March 25, 2022, at 8:49 p.m., Langley RCMP responded to a report of an unconscious man in the 20400-block of 88 Avenue. Officers attempted life-saving efforts, but 30-year-old Cody Mostat died on scene.
The Integrated Homicide Investigation Team (IHIT) assumed conduct of the investigation. Supported by the Langley RCMP, the Combined Special Enforcement Unit of British Columbia (CFSEU-BC) and the Integrated Forensic Identification Services (IFIS), IHIT investigators worked diligently to gather pertinent evidence from the scene.
On August 27, 2022, at 10:58 p.m., Surrey RCMP responded to a report of a shooting outside a residence in the 16600-block of 19 Avenue. Officers located a man suffering from multiple gunshot wounds. Despite life-saving efforts by the officers, 37-year-old Troy Regnier died as a result of his injuries.
IHIT assumed conduct of the investigation and as a result, Bos was identified as a suspect.
On September 21, 2022, Bos was arrested without incident for the murders of Mostat and Regnier. The following day, he was charged with the second-degree murder of Mostat and he remained in custody as a result.
On March 12, 2024, Bos was charged with second-degree murder for the homicide of Regnier.
On June 6, 2025, Bos was sentenced in BC Supreme Court to a global sentence of 25 years, which was reduced by the court to 19 years after factoring in the principle of totality. Bos was sentenced to 13 years for the manslaughter of Mostat, and six years, to be served consecutively, for the manslaughter of Regnier.
He was also sentenced to six years for manufacturing of firearms for a separate investigation, to be served concurrently. At the time of sentencing, Bos had spent two years in custody, credited as four years. He will serve a further 15 years in jail for these offences.
“This outcome reflects the diligent work of our investigators and partners,” said IHIT Sgt. Freda Fong on Wednesday. “While these investigations began separately, it was our strong partnerships that facilitated advancing both investigations. IHIT would like to extend our thoughts to the families of Mr. Mostat and Mr. Regnier. We hope that the conclusion of the court process provides them closure.”
