<P> Life imprisonment in South Africa has an indeterminate length and may last for the remainder of the offender's life . It is a mandatory punishment for premeditated murder, gang rape, serial rape and rape where the rapist knew they were HIV positive or if the victim was under 18 and / or mentally disabled . In certain circumstances, robberies and hijackings (and aircraft hijacking) also carry a mandatory life sentence . </P> <P> Section 51 of South Africa's Criminal Law Amendment Act of 1997 prescribes the minimum sentences for other types of murders, rapes and robberies to 25, 15 and 10 years respectively, so parole is almost always granted to prisoners serving life sentences after the minimum sentence for the lesser crime has been served . However, a prisoner must be given a parole hearing after having served 25 years . </P>

How long is life in prison in south africa