Visakhapatnam, Oct 13: The police on Tuesday seized contraband ganja worth Rs 1.80 crores in international market at Puligondhi village in Pedabayalu mandalam in Visakhapatnam district.On a tip-off, police raided the village and seized the contraband, said the police. No one person was arrested in this connection.Following the huge haul, the District Superintendent of Police, Mr Anil Kumar, appealed to people to cooperate with the police and pass on information if illegal activities were taking place in their areas.