Deportation is on the cards for Tongan nationals who may have entered the country on the back of false information.
Immigration New Zealand has looked at the names of 172 people who may have had their criminal convictions wiped by Tongan authorities.
It has found 40 may be living here.
Minister Michael Woodhouse says those who have provided false information are liable for deportation.
"There are a number of other factors that need to be taken into account, including the seriousness of the offending, the connections they have with the community, the length of time they've been here.
"I wouldn't make a blanket statement that all people who are now resident would be subject to deportation."
Aussie Malcolm says the crime isn't in authorities wiping their convictions, because that happens for a number of different reasons.
"Applicants have to be truthful.
"If applicants are simply looking at forms and thinking they can get away with telling New Zealand lies, there must be consequences."