Officials in Belgium say they have evidence that members of the Islamic State group are looking to return to Europe. The Associated Press reports that names are added almost daily to the list of the Islamic State attackers that killed 130 people in Paris and 32 in Brussels. The list of their supporters is also growing. Paul Van Tigchelt is the head of the Belgian government’s crisis center. He said intelligence shows foreign terrorist fighters in Syria want to return “not just to Belgium, but to Europe to carry out an attack.” Patrick Skinner, a former case officer for the U.S. Central Intelligence Agency, told the AP that the Brussels-Paris IS network is a “supercell.” “This is a highly functioning cell,” he said. “You’re looking at 50 people (in this group).” He added that an extremist cell usually has six to 10 members. Skinner is now with the Soufan Group, a security advisory business. Two terror attacks have taken place in Europe during the past six months. Ten men were known to be involved in the Paris attacks on November 13, 2015.