Police say it’s believed to be the most prolific case of voyeurism ever prosecuted in Canada.
Yin Yeung Derek Chan, 39, will be sentenced in Victoria today after pleading guilty on Oct. 1, 2025, to several charges related to voyeurism.
According to the Saanich Police Department (SPD), investigators identified 652 individual women and girls as victims in the case.
The investigation began in January 2024 after a SPD detective was made aware of voyeuristic photos and videos being uploaded to a popular image-based social media site from somewhere in Saanich.
Chan, who was previously convicted of voyeurism after being caught filming a woman in a Victoria-area mall change room, was identified as a suspect.
He was arrested in his Saanich home on April 11, 2024, and a search warrant was executed.
Detectives seized devices containing thousands of images and over 28 hours of offending video that were recorded between April 2017 and November 2023.
Police say the photos and videos were taken without the knowledge or consent of the female subjects in a wide range of places, including beaches, businesses and even through the windows of homes.
“Following a thorough review of the evidence seized, investigators determined that 652 separate women and girls were captured in the photos and videos, and that Chan had been posting the imagery online,” an SPD release explained.
“Detectives noted that many of the images were posted to and viewed on websites around the world, and formal requests were made to have them removed.”
While Chan was released with conditions following his initial April 2024 arrest, he was rearrested on Jan. 30, 2025, and has remained in custody since then.
Charges Chan pleaded guilty to in October include:
The SPD says detectives were able to formally identify and contact 40 of the 652 victims, some of whom delivered victim impact statements for sentencing.
