Authorities are investigating up to four people for selling unauthorised goods at Lions games so far this tour, with items seized and police called.
The Ministry of Business, Innovation and Employment [MBIE] has been monitoring venues for all of the Lions series matches and said despite the small group busted, there had been "low levels of ambush marketing".
The Lions Series has been declared a "major event" under the Major Events Management Act 2007 which restricts trading and advertising within direct proximity to match venues.
"MBIE is currently investigating a small number of incidents involving the sale of merchandise that have an unauthorised association with the Lions Series," says Iain Cossar, MBIE's GM Tourism, Sectors, Regions and Cities.
"Three to four individuals have been seen selling unauthorised goods in both Christchurch and Dunedin before the Lions Series matches. MBIE, with the support of Police, has seized goods from these individuals in both locations. We are currently investigating these incidents as MBIE has responsibility for enforcing the Act."