During questioning by a judge, the former Chilean dictator Augusto Pinochet has denied involvement in killings allegedly committed by his regime. Judge Juan Guzman interviewed him about the deaths of 19 leftists whom human rights groups say were among 3,000 people killed during Pinochet's reign between 1973 and 1990. In a surprise move last month, Chile's Supreme Court stripped the 88-year-old of his immunity from prosecution in some cases. This week, scuba divers off Chile's Pacific Coast found sections of railway tracks on the ocean floor believed to have been used to sink the bodies of alleged victims. The search had been ordered by Guzman. Former military commanders admitted in 2001 that during the dictatorship some victims of state violence were dug out of mass graves and dumped into the ocean from helicopters **PHOTO CAPTION*** Gen. Augusto Pinochet, is seen in this Sept. 11, 1997 file photo. (AP)