The boat sank 10 kilometres from the coastline near the city of Sfax, a member of the coastguard said. Rescue operations are continuing.
Setting out his priorities for the second half of his mandate, French President Emmanuel Macron said his centrist Republic on the Move party risks being seen as "bourgeois" unless it tackles the issue of immigration.
All people must be able to access full asylum procedures and international protection, UNHCR spokesman Andrej Mahecic says.
A group of 98 people in total, including 52 children were evacuated from countries such as Ethiopia, Somalia and Sudan. The refugees had been held in detention in Libya.
The European Union's lack of support to Turkey in handling the refugee crisis is forcing Ankara to allow safe passage to Syrian refugees on their way to Europe.
Greece has been a primary European entry point for refugees and migrants, with hundreds of thousands passing through the country, settling or becoming stuck there since 2015.
The pictures, showing him lying face down on the beach, prompted calls for action to help refugees.
Libya's coast guard rescued at least 65 migrants, mostly from Sudan, with search operations under way for those still missing.
Thousands of Rohingya refugees joined a rally to mark the second anniversary of their exodus from Myanmar into Bangladesh, demanding that Myanmar grant them their citizenship and other rights before they return.
More than 500 rescued migrants are stuck in the Mediterranean on two NGO boats as Italy and Malta continue to deny them access to their ports.
Is the European far-right's claim that 'Syrian refugees increased crimes in Europe' true? Or is the far-right rhetoric far from reality?
The far-right ruling Fidesz party has introduced harsh anti-migrant policies in a bid to deter asylum seekers and refugees from entering the country.
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