The two alleged accomplices of Burmese national Thomas Nihmunga - Abhinav Singh Chauhan, a Delhi resident and Lasangpuii, a Mizo woman were, however, remanded in police custody till July 2 by Chief Metropolitan Magistrate Vinod Yadav.
The trio were arrested by the Special Cell of Delhi Police on June 21 on a tip off that Chauhan would be carrying a huge quantity of the narcotics.
Chauhan was apprehended carrying 161 kg of Ephedrine, a psychotropic substance concealed in layers of bed sheets packed in seven plastic packets.
Chauhan was travelling in a hired taxi and was on way to Moradabad in Uttar Pradesh from where he had planned to take a train to Guwahati from where the consignment was to be sent to Burma and China through Mizoram borders.
The police said Chauhan had disclosed that the consignment belonged to Lasangpuii, who was living at Masjid Moth here and Abhinav was a carrier.
The police subsequently arrested Lasangpuii and then Thomas at her instance and recovered two kg of Ephedrine from his possession.
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It was also revealed that the consignment was procured from Dehradun in form of medicine strips and upon reaching Delhi, Thomas would peel off the strips and convert the consignment into packets, which were then collected by Chauhan to be sent to Gauhati.
The police had sought the custody of Chauhan and Lasangpuii to interrogate them to nab others in the drug smuggling syndicate.