The government needed to reflect on a series of failures exposed by the extremists' recent activities, including poor intelligence and corruption.

"For all the progress that has been made in the last decade in understanding extremist networks and sharing information across the region about them, the ability to detect their activities remains weak," it said.

"That Dulmatin, one of the region's most wanted terrorists, could leave the Philippines, arrive in Indonesia and live in Jakarta for at least two years without anyone being the wiser suggests that there is still some way to go in improving basic information gathering and analysis."

Dulmatin, a bomb-making expert and one of the masterminds of the 2002 Bali bombings which killed more than 200 people, had "no difficulty getting a fake local identification card and passport," it said.

The Aceh group had also used "corrupt police contacts to buy supposedly destroyed weapons... (illustrating) yet again how corruption becomes the lubricant for terrorist activities".

In the past, experts have also told the Govt to control closely Islamic schools, because they are a very important place of radicalization. They have also denounced the lack of control over "Islamist ideology".

Dulmatin, the mastermind of the 2002 Bali bombings, was shot dead in an internet café in Jakarta, Indonesia last March 9th.