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Prison staff say corruption allegations in one of the country's largest jails are nothing new.
An investigation is underway into claims made by a former guard that Rimutaka Prison in Wellington is run by gangs and riddled with drugs.
The Corrections Association says it is not unusual to hear such talk.
President Beven Hanlon says he is disappointed that this time it has been aired in the media.
He says there are forums within the system to address matter such as this.
- NEWSTALK ZB