Solomon and Rebecca (not her real name) are two of the longest-staying residents at a shelter for trafficked children in Nigeria's capital, Abuja.

Before they turned 10 years old, they were taken from their homes in south eastern Abia state on a week-long journey across the Bight of Guinea to Gabon in a canoe.

There, they were put to work on the streets by their "uncles" - neighbours or friends of their parents from their village in south-eastern Nigeria.
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Some parents turn a blind eye to the abuse of their children