About 35 African migrants believed to have been traveling to Europe died of thirst and dehydration in the Sahara Desert after mechanical problems left them stranded, a local official in northern Niger said.
Authorities had only now learned of the tragedy that took place about two weeks ago as survivors finally made their way back, said Rhissa Feltou, the mayor of the town of Arlit in northern Niger.
"This is human trafficking, I'm afraid," he told The Associated Press. "They were probably heading to the Mediterranean to try to go to Europe, or else to Algeria to work."
The path is a well-known traffickers' route for taking people to North Africa, from where they can try to board boats to Europe.
The perils of migration from Africa to Europe have drawn growing attention and debate since the Lampedusa boat tragedy earlier this month. About 365 migrants drowned on October 3 when a boat capsized near the Italian island, which is closer to North Africa than to the European mainland.