The Narcotics Control Bureau has arrested 8 persons, including 6 Iranians, a Dutch and an Indian national after it raided two factories in Thane district of Maharashtra and seized chemical drugs worth 25 crore rupees. NCB officials said that based on the specific information, a search was carried out in two factories in Asangaon locality of Thane. The bureau seized 8.5 kg of Methamphetamine, 60kg of Ephedrine and huge quantity of other chemicals and equipments including 8kg Amphetamine, 630kg Ephedrine powder mixed with PVC resin powder and tablets among others.