Four people believed to be right wing extremists were arrested by police on Sunday.
“The suspects are aged between 40 and 50 year-old,” said Free State police spokesman Brigadier Billy Jones.
He said the four people were suspected of acts of terrorism.
“Their premises were searched and evidence supporting the investigation was seized.”
Jones said the arrests were the result of a successful joint law enforcement operation.
He said the four would be charged and brought before a court soon.
No further details about the police operation or where the four people were arrested were given. - Sapa