He was convicted for robbery and rape of a Geduld woman in June 2015.
Capt Johannes Ramphora, Springs police spokesman, says Mantjies was sentenced on first count robbery to 15 years and 10 years for rape.
“He was also found unfit to possess a firearm,” says Ramphora.
Mantjies took the woman’s cellphone and ran away after he raped her and was arrested on the same day of the incident.
He will serve his sentence at Modderbee Prison.
