Kristopher Guenther confessed to murder, victim's mother testifies

A tape was released publicly Friday of a 911 call made by a Calgary mother after her daughter was killed.

• Lacey Jones Mcknight's family says system 'failed' her
• Good Samaritan saved accused murderer from suicide, court hears on 911 call

The phone call was played in a Calgary courtroomas Shelley Jonestestified in the murder trial of Kristopher Guenther.

He is accused of strangling his formerfianceLacey Jones McKnightand driving around with her body in his car shortly before asuicide attempt.

Jones told the emergency operator thatGuenther showed up at her house that night totell her that he had killed her daughter before handingher a knife.

"He gave it to me and told me to stab him, and then he took it away from me," Jones tells the 911 operator through her tears.

She identifies the man as her daughter's ex-boyfriend to the dispatcher.Today was the first time Jones had seen Guenther since that night.

The trial is expected to last at least another week.