Belgian authorities consider the measure a way to prevent potential fighters from leaving Belgium to Syria.
According to VRT channel, the Islamic State militant group pays up to 9,000 euros ($9,915) for one fighter recruited in Belgium. Medical staff and IT-specialists are top priorities in ISIL recruitment.
ISIL is a violent extremist group in control of large areas of Syria and Iraq. The group is notorious for its brutality and many human rights atrocities. ISIL is known to use online social networks to recruit young people from around the world.
According to various sources, up to 440 Belgian citizens have joined extremist groups to fight the government in Syria.