Police are now working with prison staff to corroborate information and identify people who have been imprisoned since the raid.
Police are still trying to identify a third person involved in the Zabeel's robbery, as a getaway driver at the wheel of a maroon early-1990s Mazda Familia.
"Police will continue to follow enquiries until all the persons responsible have been identified and held to account through the courts; particularly given the level of violence used during the robberies and the affect the offending had on the victims," Mr Vining said.
The robberies were part of the most prolific spate of dairy, service station and bar holdups ever in Hawke's Bay, with almost 20 raids targeting cigarettes reported since more tobacco-product price rises were confirmed in the Government's Budget 2016 announcement in the last week of May.
While others have been arrested, police are still seeking information, including details of people selling possibly stolen cigarettes or tobacco.