Investigations into the incident revealed the men were known to one another.
Post-mortems took place yesterday and were expected to continue into today.
''Police are supporting the families of the deceased men, who we are not in a position to name at this time,'' Johnston said. ''We expect to be able to release their identities later this week.''
The remote dairy farm was cordoned off yesterday with police tape stretched across the entrance to the property and officers stationed at the start of the driveway.
A nearby resident, who did not want to be named, was shocked that the small community was the setting for such a tragic event.
She said the following days could be tough as locals potentially learned more about who their community had lost.