Siswanto sexually molested and killed 12 boys, aged 9 to 15, from December 1994 to when the last body was found on July 5, 1996. Police reported that he had slashed open the stomachs of all his victims, with most being found naked. He also told police that he enjoyed drinking his victims' blood and kept pieces of their skin. On August 6, 1996, he confessed to 8 murders in Jakarta, Indonesia, and 2 in Pekalongan in central Java. He was sentenced to death for 12 murders on May 21, 1997.
