Jackie Selebi
Selebi returned home on Thursday after a brief stay in Jakaranda Hospital in Pretoria this week.
"Mr Selebi was admitted to hospital on Tuesday, but he is now out of hospital, having been released this morning," deputy chief commissioner of incarceration and corrections James Smalberger told the Mail & Guardian.
Selebi was granted medical parole after in mid-July after serving only 229 days of the 15-year jail term handed down to him for corruption in 2010.
This equates to Selebi having served only 4.1% of his sentence.
It is reported Selebi, a known diabetic, is receiving kidney dialysis treatment after taking seriously ill following the upholding of his conviction in the Supreme Court of Appeal in 2011.
Smalberger said the correctional services department was not in a position to comment on the status of Selebi's medical condition as it violated patient-doctor privilege.
"We are well aware of his movements and he is reporting to us on a regular basis in terms of when he needs to go to hospital and so on."
As part of the conditions of his parole, Selebi is under house arrest for 22 hours per day during weekdays and for 18 hours on both Saturday and Sunday.
Selebi must make correctional services aware of any hospital visits and he must notify authorities if he leaves the Pretoria magisterial district.
Jakaranda Hospital spokesperson Adri Opperman also refused to comment on Selebi's medical condition, stating it was not hospital policy to do so.
However, Selebi's legal representative Wynanda Coetzee said, "I saw him about a week ago and I can confirm that he is indeed very ill."