In Bihar, the pesticide that killed 23 Indian schoolchildren last week had been reportedly banded by the World Health Organization (WHO) describing its high acute toxicity.
The pesticide monocrotophos, the substance that caused poisoning in mid-day meals of children in Bihar, is a nerve poison banned in India by United Nations health agency as early as 2009, the Fox News reports.
According to the report, many pesticide containers are not thrown away after use but recycled in India to store water, food and other consumables.
The children of a primary school in Bihar had fallen ill within minutes of eating the mid-day meal in their school premises last week.
The experts reportedly said that the symptoms, vomiting and convulsing with stomach cramps, would be common in poisoning with such a toxic chemical.