A 24-year-old Rotorua man has been charged with the attempted murder of a police officer.
He's due to appear in court tomorrow.
The officer was knocked unconscious in the attack.
The police said he was making good progress and was in a stable condition in hospital.
The attack happened in the Rotorua suburb of Owhata last night.
The officer was arresting a man for an assault on a woman when another man jumped the fence and hit him on the head with an object.
The Bay of Plenty District Commander, Superintendent Andy McGregor, said it was a gutless attack on an officer.