Nearly 20 Nepalese girls were recently rescued from slavery, made to perform in one of India's biggest circuses, the Raj Mahal.

The London-based Esther Benjamins Trust is responsible for the rescues. The organization, named for the deceased wife of Philip Holmes, a retired British army colonel who formed the Trust, reunites girls who have been sold into circuses with their families. It also educates them at centers in Nepal.

The group has reportedly rescued 200 girls in the nine years it has been operating.The latest rescue involved former poachers who are now gamekeepers who traveled with 12 parents to northern India to rescue a group of their daughters.

According to iAbolish, an American anti-slavery group, the girls are often sold by their parents with legal documentation, but many parents are deceived about where their daughter's will end up.

Parents who cannot afford to feed their children, or those who have debts they cannot pay, will sometimes trade their children to work off the debts. That way, someone else cares for the children and the family's debts are forgiven.

However, the group says that usually the children are used for things like sex work and camel racing.

Six agents were reportedly jailed in the most recent raid and the manager of the Raj Mahal circus was arrested.