The Blue Mountains OPP said an altercation took place at a residence at Georgian Blue housing complex on January 22, at approximately 1:30am that resulted in two deceased individuals.
The victims have not been identified as police are waiting on next of kin notification.
Cameron Gardiner, 57, of Collingwood has been charged with two counts of second-degree murder. Police believe that there was a third person accompanied the two deceased, that person has not been identified by police.
Anyone with information that can help police identify this third person or any information in relation to this incident, you are asked to contact the OPP at 1-888-310-1122.