The man, who headed high profile inquiries in New Zealand, cannot be named online because of suppression orders in the Cook Islands.
He was named by ONE News reporter Kate Lynch on TV ONE this evening with the relevant part of the 6pm broadcast being blocked from the Pacific. The video of Lynch's report is viewable in New Zealand only.
Police headquarters in Wellington confirmed 11 New Zealand officers have been in Rarotonga in the past week investigating corruption and the distribution of cannabis and other drugs.
A total of 13 people were arrested, including a senior Cook Islands police officer, a postal worker and the former New Zealand policeman.