There are renewed concerns about child trafficking in the African country of Nigeria after 56 children were rescued from a cargo truck.
The children, aged from seven to 14, had been travelling inside a metal container usually used for fish.
It's thought the children were being taken to do domestic work - like cleaning - in the city of Lagos.
Child trafficking is against the law in Nigeria but there are problems cracking down on it because it's quite common.
The rescued children were taken to a police station, where they were given water, food and clothing.
The International Labour Organisation estimates that at least 200,000 children are trafficked in West Africa each year.