Momeni said that the UN has reported that 90% of opium, 70% of morphine, and 20% of heroine in the world are discovered by Iran.
He added that about 1,200 tons of illegal drug were discovered in Iran last year.
Elsewhere in his remarks, Momeni said that presence of the US in Afghanistan is the cause of increase in narcotics production.
He noted that production of narcotics in Afghanistan experienced a 50-fold rise in 2018 compared with 2000.
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