JAKARTA - Indonesia has boosted surveillance of its vast and porous sea border with southern Philippines, as the Manila government and the Moro Islamic Liberation Front (MILF) pursue a peace deal giving Muslims in Mindanao island broader autonomy in exchange for giving up their separatist goals.

Indonesian officials say they are worried that the deal, which involved the decommissioning of arms by the Muslim fighters, may lead to "leaks" with some of the guns and other weapons sold and smuggled into Indonesia.