CBC News has obtained new details about the killing of a government worker by a Canada Border Services Agency (CBSA) officer in 2022.

The murder-suicide rocked the community of Prince Rupert, B.C., three years ago this week.

Siu Shen (Shawn) Yeung, 44, a veteran border services officer, was off duty when he gunned down his ex-fiancée, Patricia (Patty) Foreman, 52, on Nov. 21, 2022.

Yeung shot Forman as she was walking through a busy mall to her job at B.C.'s Ministry of Children and Family Development. He then turned the gun on himself.

CBC News has learned Yeung used his service weapon, a Beretta semi-automatic pistol, to kill Forman.

RCMP investigate a murder-suicide inside the Ocean Centre Mall in Prince Rupert in 2022. The building houses government offices, a day care, a school,

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