Four people have been arrested for the murder of Cramond farmer Bill Theron (85) on December 12.
Police spokesperson Colonel Thembeka Mbele said the suspects are aged between 32 and 38.
They are due to appear before the New Hanover Magistrates Court on Monday.
Theron sustained multiple injuries to his head in the attack on the farm. His elderly wife Christine found his body lying near the farm gate. The suspects fled the scene after the attack. Nothing was taken from the house.
Mbele said a case of murder was opened for investigation by Cramond SAPS.
"The docket was allocated to the Provincial Organised Crime who took over the investigation."