The group seized Kjartan Sekkingstad from an upscale resort on Samal island in Davao del Norte along with a Filipina, who has already been freed, and two Canadians, whom the militants later executed.
Abu Sayyaf, based in the south of the mainly Roman Catholic Philippines, is known for kidnappings, beheadings and extortion. It had initially demanded one billion pesos ($21 million) each for the detainees, but it later lowered the ransom to 300 million pesos each.