"It is not the case," National Prosecuting Authority spokesman Luvuyo Mfaku told Reuters. "No such warrant has been issued."
The Supreme Court on Thursday upgraded the 29-year-old athlete's sentence to murder from "culpable homicide", South Africa's equivalent of manslaughter, for which he had received a five-year sentence. A murder conviction normally carries a minimum 15-year jail sentence.
ENCA television had earlier reported that a warrant of arrest had been issued for the paralympic champion.
Pistorius had been meant to serve the rest of his sentence under house arrest on his uncle's property in a wealthy suburb of the capital Pretoria.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
A new sentence will be handed down at a later date, Mfaku said.
(Reporting by James Macharia)
