ANTWERP, Belgium (AP) — A radical Muslim organization in Belgium was a terror group that brainwashed youngsters and sent them to fight in Syria, proseutors said Monday as a trial started for dozens of its alleged leaders and members.

Only eight of the 46 suspected members of the Sharia4Belgium group were present for the trial’s opening, and a ninth appeared after the lunch break. Many others are believed to be fighting in Syria or to have died in the country’s civil war.