JAKARTA • Indonesia will next month open a prison especially built to isolate militants convicted of terrorism and keep them from communicating easily with supporters or comrades still at large, officials said yesterday.

The high security facility off the coast of Java island will not allow inmates access to mobile phones and other means of communications, Indonesia's justice minister told Australian Foreign Minister Alexander Downer at a security meeting in Jakarta.

Hamid Awaluddin "made it perfectly clear that he was concerned about the way terrorists had been gaining access to the media and to other organisations", Downer told reporters after a regional ministerial meeting on security.

"The Indonesian government rightly wants to deal with that," he said.

Security in Indonesian prisons has been tightened following a revelation that a man on death row for the 2002 Bali bombings had gained access to a mobile telephone and a laptop, allowing him to connect to the Internet and communicate with fellow militants on the run.

Indonesian Foreign Minister Hassan Wirajuda said the new prison was located on Nusakambangan island, off the coast of Central Java province.