A photo posted to the Facebook page "Gangs of New Zealand" on Wednesday shows five men, two of whom are wearing Comanchero paraphernalia, along with the caption:
New Zealand. Making moves here in Aotearoa.
Mr Cahill says the Australian government is "targeting gang members with New Zealand citizenship" and deporting them back wherever possible.
"Some of these gangs are very experienced. They have international links and that's adding to the level of concern we have in gangs around New Zealand."
He says one of the major concerns with gang activity moving over from Australia is that as we are a small country, they are likely to quickly clash with other gangs as they compete for turf.
While Mr Cahill says police are "aware that several members of the gang have been deported to New Zealand", they do not have any knowledge of them being in violent confrontations with other gang members.