India, May 18 -- The Narcotics Control Bureau (NCB) has busted a clandestine laboratory in Dehradun where a Syrian national manufactured Captagon, a banned synthetic stimulant popularly known as the 'jihadi drug', and arrested an Indian national who had leased the place to another Syrian, police officers aware of the matter said.

The NCB on Saturday night unearthed the laboratory after questioning Alabras Ahmed, the Syrian national who was arrested on May 11, and is the lookout for a second Syrian national who prepared the drug in the Dehradun laboratory, the officers added.

Last week, 31.5kg of Captagon was seized from a house in Delhi's Neb Sarai, where Ahmed lived, and 196.2 kg from a container at the Mundra Port in Gujarat. Both sei...