Thane, Apr 16 (ANI): Thane Police on Saturday seized 18.5 tonnes of drugs which has a market value of around Rs 2,000 crore. Divulging details on the matter, Thane police commissioner Parambir Singh said that this is the biggest drug gang being arrested in the history. Singh said the five persons have been arrested in connection with the case, adding that further investigation is still in process.