Mother, two teen daughters murdered in Brockville, Ont.,17-year-old arrested: police
Written by The Canadian Press on May 8, 2026
BROCKVILLE — Police in Brockville, Ont., say a mother and her two teenage daughters were the victims of a triple murder and a 17-year-old boy who was in a relationship with one of the teens has been arrested in the case.
Police say the accused is facing first-degree murder charges after the 49-year-old woman and her daughters, aged 15 and 17, were found dead inside a home on Thursday.
Insp. Darryl Boyd says the accused was in a relationship with one of the daughters, indicating that the incident was a case of intimate partner violence.
Boyd says it’s believed a knife was involved in the murders but police are still processing the crime scene.
Police say they responded to a home on Cartier Court in the border city’s north end where the woman and girls were found, and deemed their deaths suspicious.
Investigators later received information that led them to the city’s outskirts, where the suspect was arrested.
Boyd says the teenager has also been charged with assaulting a police officer during his arrest.
Boyd says while police have confirmed the incident was not random, they are still working to determine a motive.
Police say the teen appeared in court for a bail hearing on Friday and will remain in custody.
“This investigation is sensitive and complex. We recognize the profound impact this incident has on the families, loved ones and the community,” police said in a post on social media.
Brockville sits along the Canada-U.S. border between Ontario and New York state.
This report by The Canadian Press was first published May 8, 2026.
Catherine Morrison, The Canadian Press