Almost 700 girls have been poisoned by toxic gas in Iran since November, in what many believe is a deliberate attempt to force their schools to shut.

No girls have died, but dozens have suffered respiratory problems, nausea, dizziness and fatigue.

"It became evident that some people wanted all schools, especially girls' schools, to be closed down," the deputy health minister said on Sunday.

However, he later said that his remarks had been misunderstood.

The prosecutor general announced last week that he was opening a criminal investigation. However, he said that the available information only indicated "the possibility of criminal and premeditated acts".

Let’s see the Iranian government allready have killed a girl for not covering her hair have slaughtered many of the people protesting that fact and now they are going to investigate this you have to be kidding me