Sergeant Mmako Mophiring said the bodies were discovered on Wednesday evening.
"An employee at Geluksvlei farm in Vrede alerted police to an incident where a blood stained bakkie stood near the farm's main gate," he said.
"When police arrived on the scene they discovered that someone had been dragged from the bakkie to the nearby grass."
Mophiring said police discovered two bodies. One of the bodies was positively identified as the farm owner Phillipus Theunis Engelbrecht but the other was unknown.
Mophiring said police could not see the wounds the two sustained because the bodies were full of blood.
"We suspect the two may have been shot, but that will be determined once the bodies are cleaned and autopsies conducted."
He said it was not clear if the unknown body was that of an employee at the farm.
However, the employee who contacted the police could not identify the body.
Police are investigating two cases of murder.
Johannesburg - A 68-year-old man was stabbed and killed on his Ventersdorp farm during an armed robbery, North West police said on Sunday.
Superintendent Louis Jacobs said four men attacked Pieter Heynecke and his partner Elsie Nortman, 46, while they were sleeping at around 01:00 on Saturday.
He said Nortman had woken up feeling that someone was pressing down on her and realised there was a man on top of her, and another man on top of, and stabbing, Heynecke.
She realised there were another two men in the room.
Jacobs said the men were demanding money.
When Heynecke tried the resist the attack the men ran away, taking a cellphone with them.
Heynecke died shortly afterwards of stab wounds to the chest.
Nortman was not injured.
No arrests had been made but police were questioning a man on Sunday.
The men gained access to the house through a window in the living area.
Meanwhile, two men were arrested on Friday in connection with the murder and robbery of another elderly man in Klerksdorp.
Jacobs said the men, aged 25 and 28, allegedly beat and killed 85-year-old Albert Johnson in his home last weekend.
He died of head injuries.
The men were arrested in Jouberton, outside Klerksdorp on Friday. Some of the items stolen from Johnson's home were found in their possession, he said.
The men were expected to appear in the Klerksdorp Magistrate's Court on Monday.