Yesterday police arrested a suspected Jihadist cell in Belgium, the Netherlands and Germany. Later in the day Belgian police arrested another cell in Brussels.
Hours later, Belgian officials announced the detention of some 15 people in Brussels in connection with a separate probe into a group suspected of recruiting would-be "jihadists" willing to do battle in Iraq and Afghanistan.
The arrests followed a three-year investigation into the Belgian Assabil Islamic Centre, considered a hotbed for Muslim radicalism since the 1990s.
A French-Syrian imam from the centre, Bassam Ayachi, was sentenced to four years in prison in Italy in May 2009 for smuggling illegal immigrants and is under investigation in Al-Qaeda-linked plots in France and Britain.