A suspect assaulted a policeman when he was about to be arrested in Thalawathugoda this morning.
The policeman attached to the Mirihana police had gone to arrest the man after receiving a call on the police emergency number.
According to the police the man had an arrest warrant against his name at the time he was about to be arrested.
The policeman sustained injuries in the assault and was admitted to hospital for treatment.
Another police team was later deployed to arrest the man.
The police said that after the man was arrested it was found that he had consumed drugs.
Further investigations are underway.