Papua New Guinea's acting police commissioner, Anthony Wagambie, says corruption within the force is the biggest concern affecting its image.
Mr Wagambie was speaking after police investigators arrested an officer in Port Moresby for allegedly aiding the escape of two suspects from the Badili police station cells in January.
Mr Wagambie says instructions have been issued for a clamp down on corrupt practices within the force.
He says people complain about corruption and one way of cleaning the rot is to have corrupt police personnel arrested and charged.
First constable Graham Foili from Degi village in Eastern Highlands province is alleged to have released two suspects from the cells without charging them for the offences they'd allegedly committed.
He's also charged with assaulting another policeman, who's the complainant in the matter involving the two suspects.