Greg Fertuck told undercover cops he 'wants to kill an individual' midway through Mr. Big sting

Greg Fertuck, already under investigation for allegedly killing his wife Sheree Fertuck, advised undercover cops posing as criminals that he wanted to kill a Saskatoon man involved in drugs and prostitution, court heard Monday.

"He said it more than once," testified Sgt. Tiffany Climenhaga.

"I was liaising with the investigative team in Regina about taking steps for [our] duty to warn, and to still manage the operation."

Greg is on trial charged with first-degree murder in the disappearance of his wife Sheree six years ago. He has pleaded not guilty.

The operation Climenhaga referenced on the stand was a so-called Mr. Big sting created by police to trick Greg into revealing where he had disposed of Sheree's body. The sting began on Aug. 6, 2018 — three years after Sheree disappeared, and one year after Greg had been arrested, interrogated but not charged.

Climenhaga served as lead RCMP investigator in the case from Sheree's disappearance on Dec. 7, 2015, through to when Greg was arrested and charged with her murder in 2019. She transitioned from the role of lead to supporting undercover officers in the sting.

The prosecution's theory is that Greg shot his ex-wife twice during a confrontation at the gravel pit near Kenaston, Sask., where she worked, and then moved her body to another location in the country.