The policemen, including officer in-charge of Gochhapada police station, Mrutunjaya Nayak, were attacked by the smugglers when they tried to arrest them at Tambisuga village yesterday, Kandhamal SP K V Singh said.
Police could arrest two of the smugglers and seized 40 kg of ganja. The others managed to flee.
The vehicle used by them to transport the contraband and the weapons were also seized, he said.