The man accused of killing a Calgary couple and their five-year-old grandson was motivated by a "petty grudge" over a patent dispute and burned their bodies in a barrel after killing them, court heard Monday as the triple-murder trial of Douglas Garland began.
In her opening statement, Crown prosecutor Vicki Faulkner said Douglas Garland was angry with Alvin Liknes over a dispute relating to a patent for a pump that dated back years.
She told the jury that when Garland learned through internet searches that Alvin and his wife, Kathy Liknes, were planning to leave Calgary, Garland finally decided to act on his grudge.
Five-year-old Nathan O'Brien was at his grandparents' home, having an impromptu sleepover, when the trio were taken.
Forensic analysis of Garland's computer hard drive will be presented as evidence, said Faulkner, showing research on murder, "how to kill without emotion," torture and autopsies.
The Crown said DNA evidence from the missing family members was found on a saw and meat hooks, and bones and a tiny tooth were discovered in a large burn barrel.
A mapping plane that flew over the property also took photographs that show three bodies in the grass, according to the Crown's opening statement.
Alvin and Kathy were lying face down, according to the prosecution.
"You will also see a small figure curled up on the grass," said Faulkner. "The Crown says this is Nathan."
Alvin Liknes' son, Allen Liknes, was the prosecution's second witness. He was married to Douglas Garland's sister Patti at the time the family disappeared.
Both Allen and Patti were instrumental in alerting police to information that caused Garland to become a suspect the day the trio was discovered missing, according to the Crown's opening statement.
Allen testified that he, Alvin and Garland had worked together around 2006-2007, when his father hired Garland to do some wiring for a pump the father and son were developing.
The relationship between Alvin and Garland disintegrated beginning in 2007 when Garland became upset that he had been let go from the business after he stopped answering the phone, Liknes testified. By 2010, Allen testified that he and his father stopped talking to Garland because Alvin had had enough.
Allen told officers about the long-standing grudge Garland held against Alvin on June 30, 2014.
The same day, Patti Garland recognized a photo of a green truck released by police as similar to the one driven almost exclusively by her brother, Douglas Garland. The image had been captured by a surveillance camera on the Liknes's street the night the family disappeared.
She sent a photo to Allen who forwarded it on to police, according to the Crown's opening statement.
In cross examination, Allen Liknes told defence lawyer Kim Ross that Garland never threatened his father.
"He's not confrontational at all," said Allen Liknes. "If anything he's sneaky."
Douglas Garland killed Calgary couple and grandson over 'petty grudge,' court hears - Calgary - CBC News