The Abu Sayyaf, a loose network of militants based on remote islands in the southern Philippines, has defied more than a decade of military offensives and been on a lucrative kidnapping spree in recent years.
In the latest reported incident, the Philippine military on Monday said the group had killed a German woman and abducted her companion from their yacht off the southern Philippines.
The two-day trip is the first official visit to Malaysia by the tough-talking Duterte, 71, who did not appear at the press conference. AFP