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Court of Appeal denies Douglas Garland new trial

Last Updated Dec 6, 2019 at 12:51 pm MST

Douglas Garland is escorted into a Calgary police station in connection with the disappearance of Nathan O'Brien and his grandparents in Calgary, Alta., Monday, July 14, 2014. A man sentenced to life in prison for killing a Calgary couple and their grandson will appeal his conviction Thursday. Douglas Garland was convicted in 2017 of the first-degree murders of Alvin and Kathy Liknes and their five-year-old grandson Nathan O'Brien in 2014. THE CANADIAN PRESS/Jeff McIntosh

CALGARY (660 NEWS) — The Alberta Court of Appeal will not order a new trial for convicted murderer Douglas Garland.

Garland’s lawyer argued police didn’t have a proper search warrant when they searched his property outside Airdrie, and that evidence should not have been presented to a jury.

Garland was found guilty of first-degree murder in the deaths of five-year-old Nathan O’Brien and his grandparents Alvin and Kathy Liknes in 2014.

WATCH: Douglas Garland appeals his convictions 

He was sentenced to life in prison with no chance of parole for 75 years back in 2017.