Lake Bonavista dead

The bodies of Don and Roxanne Carlson were discovered in their Lake Bonavista home in February. (Jason Kokot/CBC)

Friends of a Calgary couple found dead in their home in February are offering a reward for information about their deaths.

The bodies of Don and Roxanne Carlson were discovered in their southeast Calgary home after police were called in connection with a suspected carbon monoxide leak, which was later ruled out. When police arrived, one of the individuals was dead while the other was in medical distress and died a short time later.

The case is being treated by police as a double homicide.

So far, no one has been arrested and the anonymous $25,000 reward is being put up to try and spur anyone with information to come forward.

Anyone who may have information about this case is asked to contact the Calgary Police Service at 403-266-1234, the Homicide Tip Line at 403-428-8877 or emailhomicidetips@calgarypolice.ca.

This reward offer expires on June 30, 2015.

The $25,000 reward is offered independently of Crime Stoppers. However, those who wish to remain anonymous may submit a tip to Crime Stoppers. Any tips that that lead to an arrest are eligible for a cash reward of up to $2,000.