Santiago, Chile ? The Supreme Court stripped Gen. Augusto Pinochet of immunity from prosecution Wednesday, paving the way for a trial of the former dictator for his alleged role in the disappearance and killing of 15 dissidents during his 1973-90 regime.

The court voted 10-6 to strip the 89-year-old of the immunity from prosecution he enjoyed as former president and authorize his trial in the “Operation Colombo” case, Chief Justice Jose Benquis said.

That case involved the slaying of 119 dissidents whose bodies were found in neighboring Argentina in 1975, but Pinochet would face charges for only 15 victims whose relatives filed a criminal suit against him.

At the time the bodies were discovered, Pinochet’s regime said they had died in clashes among rival armed opposition groups. It supported its claim by exhibiting reports in two magazines, Lea of Argentina and O Dia of Brazil. But both magazines published only that issue and then disappeared.

Wednesday’s ruling cannot be appealed.