Philippine officials say their intelligence shows that the Islamic State militants that have stormed Marawi City in the southern Philippines includes foreign terrorists.
They say Islamic terrorists from other countries have heeded the call of ISIS to go to the Philippines if they find difficulty in going to Iraq and Syria.
President Duterte had pleaded with political and Islamic leaders to keep foreign and local militants at bay but said the presence of foreign fighters in the street battles that have raged is proof that Islamic State had gained a foothold on the major island of Mindanao.