Owner Arthur Gibson, 61, and Michael Murphy, 37, were discovered with gunshot wounds at the property in Glenarm, Co Antrim. Detectives are not looking for anyone else in connection with the deaths and are following a definite line of inquiry.
Speaking on the suspected shooting incident in Northern Ireland, assembly member for the area Stewart Dickson said: "This is an absolutely shocking incident, which has left the village and the surrounding community in shock.
"My thoughts are with the families and friends of the deceased and would call for anyone with any information to contact the PSNI as soon as possible."
The Alliance MLA added: "I hope the police will be able to determine what was behind this tragic incident