The deportation was the first of its kind since a mass border crossing into the territory from Morocco in July.

Spain has deported more than a dozen migrants from its North African enclave of Ceuta, prompting criticism from Amnesty International, which said Prime Minister Pedro Sanchez’s left-wing government was endangering their human rights.

It was the first deportation of its kind since a mass border crossing into the territory from Morocco in July.

The Spanish Interior Ministry said on Tuesday that it had deported the migrants from Ceuta after their asylum applications were rejected, and that Morocco had agreed to receive them.

Nongovernmental organisations (NGOs) told the Reuters news agency that 16 people from African, Middle Eastern and Asian countries had been deported.

About 80,000 people entered from Morocco over a 48-hour period in late July. At least 100 people died during the mass crossing into the autonomous city, which covers just 18.5 square kilometres (7.2sq miles) and has a population of about 80,000.

The crisis has evolved into a major political challenge for Sanchez, who is seeking re-election in snap polls scheduled for November 29.

Tens of thousands of protesters have gathered across Spain in recent months to denounce the government’s handling of the situation. Meanwhile, right-wing parties have used the crisis to attack Sanchez.

The leader of the far-right Vox Party, Santiago Abascal, has branded the prime minister a “traitor”.

Human rights guarantees

Amnesty International has warned that the human rights of those deported from Ceuta on Tuesday could be at risk.

“Spain, despite its [progressive] speeches in Europe, is not ensuring that human rights guarantees are met for people who cross its borders in Ceuta and Melilla,” said Virginia Alvarez, an Amnesty International researcher.

“Morocco does not respect many human rights.”

However, Madrid disputes the rights group’s accusations. In a statement, the interior ministry told Reuters that the European Union considers Morocco to be a safe country, adding that deportations are carried out “with all the necessary safeguards”.

Most of those who entered Ceuta in late July left within days. However, about 8,000 migrants still remain. Some are sleeping on the streets, while others are being housed by Spain, charities and civil society groups.