According to CNN, Pistorius, 28, was sentenced in October to five years in prison for culpable homicide in the killing of Reeva Steenkamp on Valentine's Day 2013. In South Africa, culpable homicide means a person was killed unintentionally but unlawfully.
Pistorius acknowledged firing shots through the bathroom door in his home, but claims he had mistaken his girlfriend for an intruder.
In his 2014 trial, a judge found Pistorius to be not guilty of murder. Prosecutors are appealing that verdict. CNN reports.
Under South African law, Pistorius must serve at least one-sixth of his sentence -- 10 months -- before being released. The parole board is prepared to recommend that he be released on August 21, 10 months to the day since his sentencing.
Steenkamp's parents have reportedly wrote a letter to the parole board in protest, calling for accountability.