(VOVworld) - Dutch counterterrorism coordinator Dick Schoof said that the "Islamic State" (IS) extremist group has between 60 and 80 operatives in Europe to carry out attacks there.

Schoof also pointed out that IS fighters and supporters driven out of Syria and Iraq by government and international military operations were likely to come to Europe in the guise of refugees. He said there were probably between 4,000 and 5,000 European "foreign terrorist fighters" currently in Iraq and Syria. European authorities have expressed concern that such fighters could potentially pose a continued security threat if and when they return to their homes in Europe.