Forty-one boat migrants reported drowned in Mediterranean - IOM
The four survivors said they were originally from Sub-Saharan Africa and had left the city of Tripoli in Libya on Saturday. They then stayed adrift for four days before their boat was wrecked, the IOM spokesman said in a statement.
"It appears that the four were found floating in the sea by a helicopter and were then rescued by the military ship Foscari," the IOM said.
(reporting by Stephanie Nebehay, writing by Isla Binnie)