The European Union has called an emergency meeting for next Tuesday to address a migration crisis in Spain’s Ceuta enclave and tensions among member states, according to a BBC report published Sunday. The move follows the recent simultaneous entry of about 60,000 migrants into Ceuta from Morocco. EU leaders are seeking to secure the bloc’s external borders and coordinate a response.

A joint letter signed by 22 EU leaders warned that any perception that illegal entry is possible could create security risks across Europe, encourage further migration and undermine confidence in common policies. The letter was addressed to EU President Antonio Costa, European Commission President Ursula von der Leyen and Irish Prime Minister Michael Martin. Ireland currently holds the presidency of the EU Council, and leaders from the Netherlands, Finland and Belgium were among the signatories.

At least 67 people have died in the sudden border crossing, though officials said nearly all those who reached Ceuta on July 30 had already returned. Italy temporarily suspended the Schengen agreement with Spain for one month, a move backed by Finland and Denmark. Spain condemned the decision, while its interior minister said Ceuta was nearly back to normal and barriers were being built to prevent waterborne entries.