His lawyer Brian Webber told the AFP news agency that a decision over his early release has been referred back to the parole board.
The Paralympic star was jailed for five years in 2014 for the culpable homicide of Reeva Steenkamp.
He has been fighting a lengthy battle to be released early from jail.
Pistorius was due to be released in August, but remained in prison after Justice Minister Michael Masutha made a last-minute intervention blocking it.
The parole review board – the final recourse for parole disputes – met on Monday to decide if the star, 28, should be allowed out on house arrest.
A definitive parole ruling is now unlikely to be made before the athlete, in a separate legal process, appeals against his conviction on 3 November in Bloemfontein.
This ruling could result in him receiving a longer prison term.
