Mehdi Nemmouche, a Frenchman accused of killing four people in an attack at the Jewish Museum in Brussels on May 24, has been extradited from France to Belgium. The French-Algerian suspect had fought in Syria and lived in Molenbeek before the attack. The mayor of Antwerp said that at least 4,000 to 5,000 people from the Schengen zone have fought in Syria and now pose a threat to Europe. He called for better coordination between European member states and within Belgian security agencies to address the threat.
