 On 13 December, Judge Juan Guzmán Tapia placed Pinochet under house arrest and indicted him over the disappearance of nine opposition activists and the murder of one of them during his regime.However, the Supreme Court reversed the Appeals Court ruling in the Carlos Prats case on 24 March 2005, thereby upholding Pinochet's immunity.Later that year, on 14 September, the Supreme Court decided to strip Pinochet of his immunity in the Operation Colombo case involving the killing of 119 dissidents.