SOUTH Africa's top court rejected an attempt to overturn a previous decision that found former president Jacob Zuma should go back to jail after being released early on medical parole. The Constitutional Court ruling could send Zuma back to prison, two years after his initial arrest sparked widespread protests that saw at least 337 people killed. The Department of Correctional Services said in a statement that it was studying the judgment and seeking legal advice before commenting. A spokesperson for Zuma declined to comment directly on the ruling and referred any questions to the department, noting that prison officials had sought the…