They held up two workers on the farm, between Modimolle and Vaalwater.
“Between eight to 10 suspects, armed, arrived on the farm this afternoon,” police spokesperson Ronel Otto told the broadcaster.
“They then overpowered two workers on the farm, a man and a woman in their 40s. They then tied them up and threatened them with firearms and… went to a special enclosure where the rhinos are kept. And they shot and they killed two rhinos and they cut off their horns and fled.”
No arrests have been made.