In December Inspector Greig said the senior constable had sustained significant facial injuries, including a fractured eye socket, and received medical treatment at the Hawke's Bay Hospital.
It was said the senior constable would require surgery for the eye-socket fracture and ongoing dental care for a broken tooth.
The authorised officer sustained chest and rib injures and also received medical treatment, Inspector Greig said.
Inspector Wallace said the senior constable had recently had surgery and was in the process of recovering at home, while the authorised officer had returned to full duty.
The maximum penalty for causing grievous bodily harm with intent is 14 years' imprisonment while injuring with intent is five years' imprisonment.