South Africa's prison service says it will challenge a court decision that sent former president Jacob Zuma back to jail.
The Department of Correctional Services says having carefully studied the judgment, Correctional Services is convinced that another court may arrive at a different conclusion.
The Supreme Court of Appeal had on Monday ordered Mr. Zuma to return to prison after upholding an earlier ruling that his medical parole had been unlawful.
The 80-year-old was given a 15-month sentence last year for contempt of court over his refusal to testify during an investigation into corruption.