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Mother, Son Deceased, Officer Injured in Estevan Shooting

On Wednesday, November 1, the Saskatchewan Serious Incident Response Team (SIRT) received a notification from the Estevan Police Service (EPS) regarding an officer involved shooting that had taken place within the EPS headquarters at approximately 9:25 a.m.

Earlier that morning, EPS received a call for service and discovered a woman, 46-year-old Karie Ann Guillas, who had sustained serious injuries within a residence in Estevan–Estevan Police Chief Rich Lowen confirmed her injuries were consistent with stab wounds. Despite first aid and medical treatment being provided, the woman (the boy’s mother) was taken to hospital, where she died from her injuries and her 19 year-old son, Justice Guillas, was arrested.

Justice Guillas was taken to EPS headquarters to be processed in conjunction with his arrest. During the process of photographing him, a confrontation took place and he gained control of an EPS issued firearm. During the incident, one member of EPS was shot, sustaining a serious injury. A second EPS member discharged their service pistol, striking Justice Guillas.

EPS members provided first aid until EMS arrived. EMS attended the scene and provided care to both the officer and Justice Guillas before both individuals were transported to hospital, first in Estevan and then to Regina. Justice Guillas was subsequently declared deceased at approximately 3:50 pm on Wednesday, November 1. 

Following the notification, a SIRT team consisting of the Civilian Executive Director and five SIRT investigators were deployed to Estevan to begin their investigation. 

SIRT’s investigation will examine the actions of police during this incident. EPS will maintain conduct of the homicide investigation that led to the initial arrest, and the RCMP are investigating the injuries sustained by the EPS member during the incident. No further information will be released at this time. A final report will be issued to the public within 90 days of the investigation ending. The officer’s name will not be released while the incident is under investigation.

SIRT’s mandate is to investigate alleged cases of serious injury, death, sexual assault or interpersonal violence arising from the actions of on and off-duty police officers, or while an individual is in police custody.


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