The European Union and the United Nations refugee agency are calling for a swift end to a political standoff that has left 629 migrants on a rescue ship drifting at sea after Italy refused to let it dock.
The Aquarius, with 629 rescued migrants, including 123 unaccompanied minors, 11 other children and seven pregnant women aboard, is waiting in international waters between Italy and Malta, which has also refused to take them in.
Matteo Salvini, the head of the far-right League party who became interior minister this month vowing to crack down on the influx of migrants from Africa, blocked the ship, operated by SOS Mediterranee and Doctors without Borders, over the weekend.
"Saving lives at sea is a duty, but transforming Italy into an enormous refugee camp is not," Salvini said on Facebook on Monday. "Italy is done bowing its head and obeying. This time there's someone saying no."
Pictures issued by SOS Mediterranee showed hundreds of Africans huddled aboard, including a young girl wrapped in a blanket in the arms of a rescue worker.
The Aquarius ship at sea. Source: AAP
"People are in distress, are running out of provisions and need help quickly," the UN refugee agency said, urging governments to set aside political considerations.
"Broader issues such as who has responsibility and how these responsibilities can best be shared between states should be looked at later," UNHCR special envoy Vincent Cochetel said.
SOS Mediterranee said the ship had enough supplies to feed the migrants, at least for another day.
Italy has had to deal with hundreds of thousands of migrants in recent years coming via Libya to reach Europe.
EU law requires asylum seekers register in the first safe country they reach, but frontline countries such as Italy and Malta say the burden needs to be shared out across the bloc.
"This is not an inhumane act," said Transport Minister Danilo Toninelli, in charge of Italy's ports and coast guard.
"It's common sense ... We ask that all of Europe assume responsibility for such a delicate and important issue as is immigration," he said in a TV interview.
The European Commission urged action.
"We are talking about people ... The priority of both the Italian and Maltese authorities should be ensuring these people receive the care they need," Commission spokesman Margaritis Schinas told a news conference.
Maltese Prime Minister Joseph Muscat said on Sunday that he had told his Italian counterpart, Giuseppe Conte, his country would not take the ship.
