Belgian police on Tuesday arrested ten people in the Brussels area for being a part of a network recruiting people to fight with ISIL takfiri group in Syria.

Belgian police on Tuesday arrested ten people in the Brussels area for being a part of a network recruiting people to fight with the so-called 'Islamic State of Iraq and the Levant' (ISIL) takfiri group in Syria, prosecutors said.

The ten were arrested during raids in Molenbeek and others areas of the Belgian capital but the case is not linked to the deadly November Paris attacks, the federal prosecutor's office said in a statement.

The statement said that the raids were carried out as part of an investigation into a recruitment network linked to ISIL. The investigation helped determine that several people had travelled to Syria to join ISIL.

The raids were ordered by a counter-terrorism judge in the eastern city of Liege who will decide later in the day whether to continue holding them, the statement added.

Investigators were studying mobile phones and computer equipment seized in a total of nine raids across Brussels.

Belgium has produced more extremist militants relative to its population than any other country in Europe, with some 500 believed to have gone to fight in the Middle East.

Belgian police are holding several people in connection with the November 13 attacks in Paris which left 130 people dead and hundreds wounded as it emerges that the onslaught was largely organized and coordinated from Belgium.

Earlier this month, the authorities identified three safe houses used by key Paris suspects - in Brussels, in Charleroi, an hour's drive south of the capital, and in Auvelais, a village near the French border.