Police in China say they have rescued thirty-five kidnapped children after uncovering a child-trafficking ring.

Twenty-eight people have been arrested.

The case came to light in December when bystanders saw a man grab a boy in the city of Guiyang in southwestern Guizhou province.

The man is reported to have admitted to the capture of sixty children but police believe the number is much higher.

Nearly all the children found are boys under eight years old, the sons of migrant workers.

The authorities are looking for the children's parents but fear some have moved to other cities. Correspondents say the case highlights the growing problem with trafficking in women and children which is the result of demographic trends that have left many rural families desperate for brides and male children.

From the newsroom of the BBC World Service