02/18/2014 02:33 EST | Updated 02/18/2014 02:59 EST

Don And Roxanne Carlson Dead: Calgary Couple's Lake Bonavista Deaths Ruled Double Homicide

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The deaths of a Calgary couple found in their Lake Bonavista home over the weekend have been ruled a double homicide by police.

Don Carlson, 59, and his wife Roxanne Carlson, 56, were found dead by a family member just before 1 p.m. on Saturday.

Emergency services were called to the 12000 block of Erie Lake Road S.E. after receiving a call about two people in cardiac distress.

Police originally thought their condition may have had to do with a carbon monoxide leak, but fire crews ruled it out after performing tests on the scene.

Police released the following statement from the Carlson family:

"We are shocked and devastated by the sudden loss of our parents Don and Roxanne Carlson. Both were loving parents and will be terribly missed by all those who knew and loved them. Our parents were wonderful and well-respected people, known for their love of family, involvement in their community, and their professional accomplishments."

A neighbour told the Calgary Herald the Carlsons had lived in the community for a long time and could often be seen enjoying time in their yard.

According to the Calgary Sun, Don was owner of Albern Coin & Foreign Exchange and Roxanne worked for the Calgary Board of Education.

Police say the Carlsons were last seen at 9:30 p.m. on Friday, February 14. Investigators are trying to piece together the couple's movements and whereabouts between the time they were last seen and found dead.

The cause of their deaths has not been released.

Anyone with information is asked to contact Calgary police at 403-266-1234 or call or Crime Stoppers anonymously at 1-800-222-8477.

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