Belgian authorities launched six more raids in the Brussels region after the deadly Paris attacks. One of the suicide bombers, Bilal Hadfi, was linked to the suburb of Molenbeek in Brussels.
According to French media, one person was arrested during the raids. Belgium has yet to confirm the information.
Meanwhile, French Prime Minister Manual Valls has warned that France could face chemical or biological attacks from terror groups. He has not mentioned a specific threat involving such weapons.