"Schengen is under threat, but not because of this attack [in Paris], but because the border controls are not effectively used," Juncker told journalists.
He added that people who conduct terror attacks must not be confused with asylum seekers fleeing from violence.
"The one who is responsible for the attacks in Paris, cannot be put on equal foot with real refugees… He is a criminal, and not an asylum seeker. I would like to invite those in Europe who try to change the migration agenda we have adopted, I would like to invite them be serious about it," Juncker added.
According to reports some of the attackers were thought to have entered Europe disguised as refugees, seen as a result of weak border controls in some EU member states. This possibility points to the necessity of strengthening border controls, including those between Schengen states.
