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A jailed member of the AWB is expected to appear in court in Port Elizabeth on Thursday for a murder committed 16 years ago.
Thirty-nine-year-old Abraham Klopper, who is already serving a life sentence for the deaths of 20 people in bombings in the mid-nineties, has been charged with the murder of Sanet de Wet.
She was allegedly smothered with a pillow at a hide-out on a farm in the Karoo.
Her husband Jan is serving 25 years for his role in the right-wing bombing campaign before the 1994 elections.
Security is expected to be extremely tight at the regional court for Klopper's court appearance.