Manila - Philippine troops have killed 40 Abu Sayyaf extremists and wounded 25 others in two battlefronts in the first major counter terrorism offensive in the south under the new president, the military said on Monday.
Regional military spokesperson Major Filemon Tan said 22 militants had been killed and 16 others wounded in the assaults that started last week in the jungles of Sulu, a predominantly Muslim province where the ransom-seeking militants are also believed to be holding a number of foreign hostages.
One soldier had been killed in the fighting in impoverished Sulu, about 950km south of Manila, he said.
On the nearby island province of Basilan, 18 Abu Sayyaf fighters had been killed and nine others wounded in a simultaneous offensive centring in the town of Tipo Tipo, according to Tan.
The thousands of troops waging the assaults were backed by rocket-firing helicopters and artillery fire.
President Rodrigo Duterte, who started his six-year term on June 30, has warned the Abu Sayyaf to stop a wave of ransom kidnappings, saying he would eventually confront them. His military chief said last week a looming offensive would "shock and awe" the extremists.
While past presidents have regarded Abu Sayyaf militants as bandits thriving on kidnappings for ransom and extortion, Duterte said last week he would not lump them with criminals. "These were the guys who were driven to desperation," he said.
The militants, however, have shown no sign of heeding Duterte's call to stop kidnappings, which he said has sullied the country's image.
Indonesian officials said on Monday that suspected Abu Sayyaf gunmen kidnapped three Indonesian fishermen over the weekend off Lahad Datu in the Malaysian part of northern Borneo, the latest among several offshore attacks that have sparked a regional security alarm.
Washington and Manila list the Abu Sayyaf, which has more than 400 armed fighters, as a terrorist organisation for deadly bombings, ransom kidnappings and beheadings over the last three decades.