An Otago prison's been put in lockdown after three staff were assaulted by three inmates.
The incident happened this afternoon at Otago Correctional Facility, south-west of Dunedin.
Acting Prison Director, Lyndal Miles says one of the staff members assaulted had to be treated for non-life threatening injuries.
Miles says staff followed standard procedures when they locked down the site and the situation is fully under control.
A police spokesman said he was not able to provide any details on what occurred.