Third person charged with murder in death of Rebecca Mathieson

A third person is facing a charge of murder in connection with the death of Rebecca Mathieson in Regina.

According to police, officers were called to an alley in the 1400 block of Wascana Street for a report of an injured person at around 4 a.m. on Aug. 14. When they arrived, the officers found 37-year-old Rebecca Autumn (Wilson) Mathieson “suffering from significant injuries.”

Read more:

• Woman, boy charged with murder in death of Rebecca Mathieson
• Woman’s death prompts Regina’s fifth homicide investigation of 2026
• Nobody hurt in three house fires in Regina

Police said Mathieson was taken to hospital by paramedics, where she died on Aug. 30.

On Thursday, the Regina Police Service announced that an investigation led to 41-year-old Destinee Villebrun and a 17-year-old boy – who cannot be named due to provisions in Canada’s Youth Criminal Justice Act – each being charged with second-degree murder in connection with Mathieson’s death.

Then, on Friday morning, police announced that a third person – 21-year-old Kaylee Pelletier – is also facing a charge of second-degree murder. She’s expected to appear in Regina Provincial Court on Friday morning.

Police said Mathieson’s killing marked the city’s fifth homicide investigation of the year.

Previous homicide cases in 2026

Regina’s first homicide investigation of the year started on Jan. 19, when 56-year-old Michael Norman Ross was found dead in an abandoned vehicle in the city’s North Central neighbourhood. Four people have been charged in connection with the alleged crime.

The city’s second homicide investigation of the year was opened April 13, when officers were called to the 3100 block of Fifth Avenue in North Central just after 1 a.m. Upon arrival, police found an injured man, later identified as 36-year-old Miles Anderson. While officers attempted life-saving measures, police said Anderson was declared dead at the scene. Two men were charged with second-degree murder.

Regina’s third and fourth homicide investigations of 2026 began on Aug. 11, when officers were called to Elphinstone Street in North Central. They found 42-year-old Sarah McGillis and 37-year-old Arland Nahnepowisk dead outside a home. Two women and one man have been charged in connection with those deaths.

The city’s sixth homicide investigation of the year was opened after the shooting death of 20-year-old Deandre Lagimodiere on Oct. 3. Maddison Blueeyes, 25, is facing a charge of first-degree murder in connection with Lagimodiere’s death, as well as being unlawfully at large starting on the day before the shooting.

Regina police investigated 11 homicide cases in 2025.