MANILA, Philippines — The southern Philippines once drew small numbers of foreign militants aligned with al-Qaida or the Islamic State group to train in a secessionist conflict involving minority Muslims in the largely Catholic nation.
That backdrop prompted an investigation this week by Australian and Filipino into a recent trip to the southern Philippine region of Mindanao by the father and son accused of gunning down 15 people at Sydney's Bondi Beach on Sunday.
Australian police said the attack was inspired by the Islamic State group and Prime Minister Anthony Albanese said Tuesday the IS link assessment was based on evidence obtained, including ''the presence of Islamic State flags in the vehicle that has been seized.''
The Bureau of Immigration in Manila said Tuesday that the suspects stayed in the Philippines from Nov. 1 to Nov. 28 with the southern city of Davao as their final destination before flying back to Australia.
Philippine National Security Adviser Eduardo Ano told The Associated Press on Wednesday there is an investigation into whether the suspected gunmen trained with Filipino militants, but supporting evidence has not surfaced.
''There is no indicator or any information that they underwent training'' in Mindanao, Ano said.
Here is a look at the details of Islamic militancy in the southern Philippines:
Mindanao has a long history of conflict