The NCB's Mumbai unit has seized 8,640 bottles of a cough syrup containing codeine, a banned narcotic drug, from neighbouring Thane district and arrested two persons in this connection, an official said on Sunday.

Acting on an input, a team of the Narcotics Control Bureau (NCB) on Saturday intercepted a car on the Agra-Mumbai highway near Bhiwandi town in Thane. While searching the car, they found 8,640 bottles of the codeine-based cough syrup, collectively weighing 864 kg, kept in 60 boxes in the vehicle, the NCB official said.