Paralympian Oscar Pestorius was found guilty in 2015 after shooting his girlfriend Reeva Steenkamp on Valentine’s Day.
He was charged of culpable homicide but that verdict was later changed to murder by South Africa’s Supreme Court.
Reports suggest that he has become a spiritual leader and teaches fellow inmates about the Bible.
Dad Henke Pistorius said he has no doubt that Oscar has changed the environment in the prison for the better.
He said Oscar is helping to mediate between people and is having a positive influence.
However, Pistorius will be eligible for parole in 2023.