Chennai,Mar24 : Spurious drugs valued at Rs one crore have been seized from a private godown here in the wake of authorities unearthing a racket in sale of expired medicines.Special teams have been formed to trace five persons believed to be the main accused in the case, including one Meenakshisundram, a police release said.A police team seized the expired and spurious drugs from a godown at Puraswalkam.While seven persons have already been arrested in connection with the case, two others have surrendered before a local court, police said.Police said they were coordinating with Drugs Control authorities to prevent sale of spurious and expired drugs.Recently, police recovered spurious and expired drugs from different parts of the state including Chennai which were allegedly meant for sale after repackaging, following which Chief Minister M Karunanidhi directed officials to tighten vigil and prevent sale of such drugs.He had instructed police and Drugs Control department officials to initiate stringent action against those involved in the trade and bring them to book.