'Stranded' migrants rescued in Niger desert: UN
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The International Organization for Migration (IOM) said the migrants were "vulnerable and in distress" and comprised 10 children, three women and 37 men.
IOM said they became "stranded" in the desert near the town of Dirkou after a perilous journey.
"Most were returning from Libya. Some were on their way to Libya but no longer had the means to continue their journey, and asked for our help," IOM spokeswoman Aissatou Sy told AFP.
Dirkou is a crossroads for the smuggling of migrants, weapons and drugs into Libya and on to Europe.
The group, including 49 Nigerians and one Cameroonian national, was rescued last week and flown to the transit city of Agadez, where the IOM runs a reception centre.
Abandoned, some migrants die of dehydration, they say.