Geneva — The United Nations said Wednesday that 42 migrants were missing and presumed dead after a rubber boat capsized off the Libyan coast, with only seven survivors rescued after six days adrift.

"Tragically, 42 individuals remain missing and are presumed dead, including 29 from Sudan, eight from Somalia, three from Cameroon, and two from Nigeria," the U.N.'s International Organization for Migration said in a statement.

The seven rescued survivors were four people from Sudan, two Nigerians and one person from Cameroon, the statement added.

Libya, divided in two since a civil war broke out in 2011 in the wake of longtime dictator Muammar Qaddafi's ouster, has become a huge disembarkation point for migrants from across Africa and the Middle East trying to reach Europe on small boats.

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