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Calgary police finish looking for evidence in missing couple’s home

Calgary police investigators check out the home where five-year-old Nathan O'Brien and his grandparents Alvin and Kathryn Liknes disappeared, in Calgary, Alta., Wednesday, July 2, 2014.

Jeff McIntosh/The Canadian Press

Police in Calgary say they've made a last sweep of the home owned by a couple who have been missing along with their five-year-old grandson since last month.

Police say they have completed their search for evidence in the home of Alvin and Kathy Liknes.

The couple and their grandson Nathan O'Brien disappeared on June 29 and police have said there is evidence a violent incident occurred in the home.

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Police say they're continuing to search a northwest Calgary landfill and a rural property and some of its surrounding lands near Airdrie, north of Calgary.

They have no suspects but have designated a resident of the rural property, Douglas Garland, a person of interest.

Mr. Garland has a close connection with the Liknes clan. His sister, Patti Garland, is in a relationship with Mr. Liknes's son Allen, according to a relative who did not want her name used.

Mr. Garland underwent psychological tests as part of an application for parole 14 years ago, where officials decided it was unlikely he would act violently toward others.

Then 40, Mr. Garland was sentenced to 39 months in prison earlier that year for manufacturing illegal drugs at his parents' acreage in the early 1990s.

Police released Mr. Garland from custody Friday on charges unrelated to the missing persons investigation.

The Canadian Press, with files from Globe staff

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