Islamic extremists could have snuck into Europe alongside violent criminals who were among the 60,000 migrants who swam into Ceuta last week. 'Other immigrants told the media that they had been in Moroccan prisons for violent crimes. One migrant, speaking about time he had already spent in Europe, revealed he had been deported to his native Morocco from Holland after fleeing Spain following a bottle attack on another man. The border town of Fnideq, also known under the Spanish name of Castillejos, is the closest Moroccan urban centre to Ceuta. The town of 85,000 inhabitants has historically been one of the major breeding grounds for Islamist terrorism in North Africa.