The incredibly rare 24.5kg meteorite sold for £3.2m at a New York auction in July

The West African country investigates how a space rock found there was put up for sale in New York.

The incredibly rare 24.5kg meteorite sold for £3.2m at a New York auction in July

Sotheby’s insists the rock was exported legally but Niger, where the meteorite was found, is investigating the sale.