Tonga's police say they have charged 11 people so far as part of their investigation into alleged forgery and illegal issuance of Tongan passports.
Police say the people have been charged with various offences.
Matangi Tonga reports the accused include Tongan and Chinese nationals.
Last November, four Tongans were charged with forgery and receiving bribes, regarding a complaint over a passport application that allegedly used a forged birth certificate.
Some of the accused were employees of the Ministry of Justice.
New charges were laid last week against two Chinese men who were in Tonga allegedly on a one-week business trip.
They were stopped at the airport trying to use Tongan passports.
