Most of the victims were beaten, subjected to abuses and told they would never see their families again by their traffickers, said Interpol.
They came from West African countries including the Republic of Benin, Burkina Faso, Niger, Nigeria, and Togo.
Local police working with Interpol rescued some of the victims from places where they were forced to become sex workers, and the majority were working as servants in markets in both countries.
One of the children was found wheeling bags of rice weighing up to 40 kilograms between the borders of the Republic of Benin and Nigeria, a spokesman for the agency said.
Forty-seven people were arrested following the raid, the agency said.
The months-long operation begun in 2018 and involved local law enforcement officers and anti-trafficking agencies in Republic of Benin and Nigeria — countries identified as hotspots for child labor trafficking, Stanfield said.
Trafficking is a significant challenge facing many African countries, where thousands of people, mainly children, are sold into prostitution rings and labor camps by human smuggling networks.
Victims rescued in this operation were handed to local officials in the Republic of Benin and Nigeria.
Some were reunited with their parents, and others have transferred to shelters in both countries, the international police agency said.
“Nobody belongs in the markets or on the streets as slave laborers,” said Hounde Seidou from Benin’s anti-trafficking agency said, adding that law enforcement officers must apprehend offenders especially in cases involving children.