Spain has claimed it is under 'attack' as Europe threatens to close its border with the country while the government battles to manage a massive wave of migrants. Around 60,000 people swam from Morocco into the enclave of Ceuta on Thursday, and more are arriving.Speaking from Ceuta, where he was heckled by locals while arriving for a meeting with officials, Spanish Prime Minister Pedro Sanchez called the situation 'an attack, a violation of the territorial integrity of Spain'. Sanchez is meanwhile facing mounting criticism after his government launched a programme in Spain earlier this year to provide legal status for some 500,000 undocumented migrants.His comments come as Italy's government said on Friday it was considering 'extraordinary measures' including closing the open border Schengen agreement with Spain.France meanwhile said it will tighten its borders with Spain while Finland said it backs calls for Spain to be excluded from Europe's passport-free Schengen area.The chaos in Ceuta also spread to Spain's second North African enclave of Melilla overnight. Warning shots were reportedly fired from both sides of the border between Morocco and Melilla on Friday, as police tried to contain the crowds.The African enclaves endured a night of chaos with cars torched and migrants forcing their way into buildings after the unprecedented influx on Thursday.Extraordinary footage showed huge numbers of people sprinting up beaches, swimming ashore and dispersing into the streets of Ceuta, which borders Morocco, with some shouting 'Long live Spain.' Moroccan security forces use water cannons as crowds gather near the border with CeutaSpain's socialist Prime Minister Pedro Sanchez was heckled today as he arrived in Ceuta Migrants move along a security fence topped with razor wire near the border with Ceuta as they attempt to reach the Spanish-administered territoryPeople walk through water to enter Spain A youth climbs under a fence back to Morocco next to Spanish military officers keeping watch Italy's government said it was considering 'extraordinary measures' including closing the open border Schengen agreement with Spain A vehicle burns at the site of clashes near Fnideq, on the Morocco-Spain border, on July 31 The rush started on Thursday afternoon and carried on well into the night