The U.N. immigration agency reports that a boat carrying African migrants that capsized off Yemen's coast has killed 56 and left 132 missing, revising casualty figures released earlier.

A boat carrying migrants from the Horn of Africa went down off the southern coast of Yemen, with the loss of at least 68 lives. More than 75 are still missing.

The vessel capsized along a heavily traveled but treacherous route for Africans transiting the war-torn country to find work in the rich Gulf states.