More than 120 investigations have been carried out into misconduct by Corrections Officers at Southern prisons in recent years.
One officer at Otago Corrections Facility (OCF) was fired as a result, while two others resigned during their investigations.
Information provided by the Department of Corrections under the Official Information Act shows there were 73 investigations at OCF and 57 at Invercargill Prison over the past five years.
Of those, a total of 99 were upheld in some capacity.