Eighty-two people are missing after the boat they were in sank off the coast of Tunisia.
Tunisian fishermen came across the sinking boat nine miles from the town of Zarzis late on Wednesday.
They were able to pull out four men but there was no trace of any of the other passengers, according to Lorena Lando, head of the International Organization for Migration in Tunisia.
Those on board are thought to have been migrants who had earlier departed from the Libyan city of Zuwara.
One of those rescued, a man from the Ivory Coast, died overnight in hospital.
In May, at least 65 migrants drowned after their boat capsized while heading from Libya to Europe.
