Do you agree with the Shafia verdict?
Mohammad Shafia, his wife Tooba Yahya and their son Hamed had pleaded not guilty.
They were accused of killing Hamed's three sisters and their father's childless first wife in a polygamous marriage.
The bodies of Zainab, 19, Sahar, 17, and Geeti Shafia, 13, along with Rona Mohammad Amir, 50, were found dead in the family's Nissan.
Outside the court house, the chief prosecutor Gerard Laarhuis said, "This is a good day for Canadian justice," adding that the four were "murdered by their family in the most troubling of circumstances."
"This verdict sends a very clear message about our Canadian values and core principles in a free, democratic society that all Canadians enjoy and even visitors to Canada enjoy," he said.
Patrick McCann, Hamed's lawyer, told The Canadian Press that he was disappointed and didn't understand how the Crown's theory could fit. He said his client will appeal and likely his parents will as well.
The verdict came after about 15 hours of deliberations, less than 48 hours after they were first charged by Maranger.
They were each handed an automatic life sentence with no chance of parole for 25 years.
See Votes by State