On the first day of a triple murder trial in Lethbridge, the accused killer is expected to plead guilty.
Austin Vielle faces three charges of second-degree murder, accused of stabbing to death Clarissa English, 24, her brother, Dakota English, 18, as well as Clarissa's boyfriend, Kyle Devine, 27.
The three were found dead inside a Lethbridge townhouse in April 2015. It was the southern Alberta city's first triple homicide.
At the time charges were laid, Chantelle English told CBC News that Vielle wanted to date her sister but Clarissa "didn't want to be with him."
Two weeks before the three were killed, Vielle was charged with assaulting and threatening Devine.
Vielle's lawyers, Tonii Roulston and Robin McIntyre, have worked out a plea deal with prosecutors Vaughan Hartigan and Bruce Ainscough. The details of that deal will come out Monday morning.
An agreed statement of facts is expected to be read aloud during the hearing, which will shed light on how and why the three were killed.
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