This "open source" information can include anything from sermons broadcast from radical mosques in the Middle East to reports in the provincial Chinese press of possible avian flu outbreaks.

But there are no radical mosques or radical clerics in southern Thailand.

Both men attended the wedding of a fellow Muslim at a radical mosque in Hamburg in October 1999 - an event considered an important gathering for the Sept. 11 hijacking teams just as the plotting was getting under way.

Danish journalist Morten Skjoldager described Meheri's mosque as a "radical mosque" in his book "Truslen indefra" ("the threat from within").

The radical imams preach hatred and how to die the 'right' way in their local, radical mosques.

Salam claims he has been running an FBI-sanctioned operation to infiltrate and develop intelligence assets in radical mosques and Islamist groups across the country.

In interviews in small monthly newspapers circulated in the more radical mosques, he was more outspoken than during the monitored telephone sermons from jail.

You go to a radical mosque, they notice you.

Proposals that didn't manage both things - closing radical mosques, for instance, which clearly made targets of Muslims - have been sidelined.

Saudis could claim that contributions to the legitimate social activities of the radical mosques were a counterweight to their irreligious behavior.