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 his release.
The parole review board – the final recourse for parole disputes – was meeting on Monday to decide if the star, 28, should be allowed out on house arrest.
Mr Webber explained that they decided to refer the matter back to the original parole board – the body accused by Mr Masutha of “prematurely” wanting to release him in August.
Correspondents say that 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.
The prosecution argues that the judge who presided over his trial did not apply the law correctly by acquitting him of murder.
The judge instead found him guilty of a lesser charge of culpable homicide – equivalent to manslaughter.