Mystery surrounding Afghan schoolgirls poisoning
4 July 2012 Last updated at 14:22 BST
The Afghan government has blamed the Taliban for a wave of suspected poisoning at girls schools.
No-one has died, but girls have fallen ill in more than a dozen incidents. Chemical tests have failed to find evidence of any poison and some blame mass hysteria.
But now the government has for the first time - made some arrests.
Quentin Sommerville reports.