One of the assailants behind Paris attacks slipped into Europe with a group of migrants. Photo: Wikipedia.

At least one of the assailants in France’s worst-ever terrorist attack was a Syrian who entered Europe through Greece with a group of migrants, French and Greek authorities said Saturday, deepening fears that other terrorists have infiltrated the European Union this way.

Paris prosecutor François Molins said that the group of eight assailants had split into three teams to carry out a series of closely coordinated suicide bombings and gun attacks on Friday night. The assault, which lasted about 30 minutes, left 129 dead and nearly 100 injured in serious condition.

Read full story at Politico.