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WATCH ABOVE: First responders to the Liknes home, and the forensic investigator, who photographed the home, testified Wednesday at the triple murder trial of Douglas Garland. Nancy Hixt reports – Jan 18, 2017
WARNING: This article contains graphic content that some readers might find disturbing.
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An expert locksmith testified on Thursday in the triple-murder trial for Douglas Garland.
Garland, 56, is charged with three counts of first-degree murder for the deaths of five-year-old Nathan O’Brien and his grandparents, Alvin and Kathy Liknes. He pleaded not guilty on all counts.
On Wednesday, a Calgary Police forensic crime scene officer testified he discovered drill marks in the deadbolt of the side door to the Liknes home.
The Crown’s theory is Garland held a “petty grudge” against Alvin over a patent that Alvin filed for a pump that Garland did some work on.
The prosecution alleges the three victims were violently taken from their beds and taken to the Garland farm where they were killed and their bodies destroyed.
WARNING: The photo gallery below contains graphic content that some readers might find disturbing.
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit
View full screen
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Police photos taken at the Liknes home after Alvin and Kathy Liknes disappeared along with their grandson, Nathan O'Brien, on June 30, 2014.
Photo credit: Calgary Police Forensic Crime Scenes Unit