Speaking to Spain's Congress of Deputies on Thursday, Sánchez rejected accusations that his government knew about the mass crossing and did nothing. "It's absurd to think that the government knew and did nothing," he said. He also insisted there was no evidence Morocco was behind the crossing and that there had been "close co-ordination" between the two countries.
Opposition People's Party leader Alberto Núñez Feijóo accused the government of lying and a cover-up, and called on the prime minister to resign. A Spanish police report has highlighted the "total permissiveness" of Moroccan security forces, although senior officials say it does not point the finger at Rabat.
Most of the migrants have been sent back to Morocco, but some 5,000 remain on the streets and beaches of Ceuta, including as many as 1,400 children. There have been several reports that Spanish officials had been warned of a rise in sea arrivals following a Spanish court ruling that many migrants misunderstood to mean they would not be pushed back if they swam across.
Spain's handling of the crisis angered some European partners. Italy responded by imposing border restrictions on arrivals from Spain. The large turnout for demonstrations in Madrid and other cities on Wednesday underlined the domestic pressure on Sánchez. The protests were ostensibly held to express support for the people of Ceuta, but frequent anti-government chants reflected public anger at the ongoing crisis.