Napier has become a home to the oldest outlaw motorcycle club in the world and police say they will be "monitoring the situation".
Well known sociologist Jarrod Gilbert, author of Patched: The History of Gangs in New Zealand, said the Outlaws' arrival meant New Zealand now hosted all three of the largest motorcycle clubs in the world.
"They join the Hells Angels, formed in the early 1960s, and the recently established Bandidos," the University of Canterbury lecturer wrote on his blog.
He said the Outlaws, who were incorporated as the American Outlaw Association (AOA), had gained a foothold in New Zealand by patching over a club of the same name that was established in Napier in 1968.
Detective Inspector Mike Foster was aware of the alignment to the international club and said the club with the same name had been established in Napier for more than 30 years.