The kidnapings by the Abu Sayyaf (ASG) seem unstoppable.
A 2005 US Department of State report cites a number of major kidnappings by the ASG thus:
In April 2000, an ASG faction kidnapped 21 persons, including ten Western tourists, from a resort in Malaysia. In May 2001, the ASG kidnapped three US citizens and 17 Filipinos from a tourist resort in Palawan, Philippines. Several of the hostages, including US citizen Guillermo Sobero, were murdered. A Philippine military hostage rescue operation in June 2002 freed US hostage Gracia Burnham, but her husband Martin Burnham and Filipina Deborah Yap were killed.