"We have detained Ravindra and three others for questioning," said an official.
Interestingly, Abhijit, who owns renowned Konduskar Travels, had been arrested by DRI in 2011 in connection with the illegal manufacture of Ketamine.
According to the official, the DRI, in collaboration with Customs (Pune), intercepted a vehicle on the Mumbai-Pune Highway today on the basis of intelligence that it was transporting Mephedrone from Islampur near Sangli to Mumbai, and detained one Nasir Sangli.
The contraband was reportedly manufactured in Islampur- based Omkar Industries which is owned by Ravindra Konduskar.
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"The factory was searched and 355 kgs of Mephedrone was recovered," the official said.
He said the DRI also detained one Ayub Makangar who was allegedly overseeing the activities and coordinating with buyers for transporting the "goods".
Another person who has been detained is identified as Ayub Khan and his office and residence were searched by the sleuths.