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Updated: Mon, 14 Jul 2014 15:21:41 GMT | By CBC News, cbc.ca

Douglas Garland back in custody in missing Nathan O'Brien, grandparents case



Douglas Garland, who was taken in for questioning from a rural Airdrie property on Friday, has a criminal history, including drug trafficking and possession of stolen property after he was caught making amphetamines on his parents' Airdrie acreage in 1992. Calgary Herald

Douglas Garland, who was taken in for questioning from a rural Airdrie property on Friday, has a criminal history, including drug trafficking and possession of stolen property after he was caught making amphetamines on his parents' Airdrie acreage in 1992. Calgary Herald

Calgary police are planning to lay murder charges in the case of a missing Calgary family.

Nathan O'Brien and grandparents Alvin and Kathy Liknes have been missing since June 29. Calgary police announced this morning that the Amber Alert issued for their disappearance has been discontinued.

Police are currently giving an update on the case.

- ON MOBILE? Watch the Calgary police update LIVE 

Police say they will not name the suspect in custody until charges are laid, but CBC learned earlier today that Douglas Garland — who had been named as a person of interest in the disappearance of five-year-old Nathan and his grandparents — is back in police custody. 

Sources close to the investigation say Garland is being questioned by police in connection with the missing family case.

The 54-year-old was staying at a motel in Airdrie, just north of Calgary, after being released on bail on unrelated charges on Friday.

'Difficult to maintain optimism'

"As the days go by, it's simply a question of where could these people be that they could still be safe?" said Patrick Baillie, a forensic psychologist with Alberta Health Services.

"And while it is difficult to maintain optimism regarding a positive outcome, we're still hoping that there is some resolution for the family and for the community."

Police said after multiple searches they have ended their investigation at the Parkhill home where the three Calgary family members were last seen.

The home belongs to Kathy and Alvin Liknes.

Police said there was evidence a violent crime occurred in the southwest Calgary home.

- TIMELINE | Nathan O'Brien Amber Alert: What we know

The search for evidence will continue this week at the Spyhill landfill in Calgary, where investigators are still sifting through mounds of garbage.

Police will also continue to search an acreage in Airdrie that belongs to Garland's parents.

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