At least 26 African migrants have died trying to reach Italy in an overcrowded boat, Italian police have said.
The migrants said they had been at sea for nine days
More than 70 survivors were rescued by a freighter off the coast of Sicily.
The migrants said they had been at sea for nine days, but a quarter of those on board died on the way, and the survivors threw their bodies overboard.
The Italian authorities believe the boat began its journey in Libya. Those on board were mainly from Sudan, Sierra Leone, Liberia and Ivory Coast.
"My son didn't make it. I had to abandon him in the sea," one survivor told Ansa news agency.
Small boats carrying illegal migrants regularly take people from North Africa to Italy.
Migrants pay people-smugglers hundreds of dollars in search of a better life.
Hundreds of people, mainly from Africa and Asia, have already tried to make the journey this year. An unknown number have died.
The issue of illegal immigration has caused outrage in Italy.
In July, nearly 500 migrants arrived on the tiny Italian island of Lampedusa, south-west of Sicily.
In a high-profile incident earlier in July, 37 Africans were denied asylum in Italy after being taken to Sicily by a German charity.
Their plight touched the Italian public, says the BBC's David Willey in Rome, but the government is taking a tough line on illegal arrivals, tightening up a stricter immigration law which came into force two years ago.