Since the mysterious poisoning of schoolgirls in Iran began in November, 13,000 cases have been reported. Hundreds of children are still being treated in hospitals.

The Iranian news agency reported this on Monday based on government figures.

The poisonings ignited tempers in Iran and sparked new protests last week. Who is behind all these cases is a big question mark. The Iranian government believes that the country that the attacks were targeted and did not act decisively.

Almost exclusively, schoolgirls are affected. Parents and relatives are angry and partly blame the authorities.