Philippine security forces have tightened security after a blast at a restaurant in the southern Philippine town of Isulan in Sultan Kudarat province wounded at least 18 people on April 3.
Philippine security forces on June 10 launched airstrikes and ground assaults on Islamist militants' lair in Maguindanao province in southern Philippines.
Australia on October 24 announced the expansion of its security support to the Philippines, which will involve training in cities, to fight the rise and spread of Islamist militants.
Australia will send troops to assist the Philippines in the ongoing battle against Islamic State (IS) fighters in the southern city of Marawi, Australia’s Defence Minister Marise Payne said.
The United States sent two surveillance aircraft and began delivering weapons to the Philippines on July 27 to help the Asian nation fight Islamist militants.
Washington has offered to send two surveillance aircraft to assist the Armed Forces of the Philippines' intelligence, surveillance and reconnaissance operations against terrorists.
Indonesia deployed Sukhoi fighters on June 18 at a base in the northern island of Borneo to strengthen security in case Islamist militants in the Philippines try to flee southwards.
The US Special Operation Forces are assisting the Philippine military in operations against the Islamist militants, the US Embassy in Manila confirmed on June 10.