The Commissioner Steve Caldwell was commenting after four people convicted on passport forgery related offences were given jail terms on Friday last week.
The four are 'Isileli Kaumavae, Sione Sosefo 'Ahohako, Sione Kivalu Heleta and Ola Tameifuna.
Mr Caldwell said the sentencing sent a very clear message about the seriousness of the offending and serves as a deterrent to people tempted to commit such crimes.
In August last year Tonga Police set up a Passport Taskforce headed by Deputy Commissioner Viliami 'Unga and staffed with 16 police investigators.
