Air New Zealand is among several airlines carrying extra fuel and cancelling services as a response to fuel contamination in Fiji.A spokesperson for the airline told RNZ that over the past two days measures had been taken to manage fuel restrictions in Fiji.This included "tankering fuel, cancelling one service, and upgauging two services to our Widebody aircraft".The spokesperson said affected passengers had been moved to other services departing the same day.The airline would continue to minimise disruptions, they said.The ABC reported both Quantas and Virgin Airlines were also forced to bring in excess fuel to make the return journey to Australia.Virgin Australia on Thursday cancelled two services on its Fiji route, according to the ABC.The airline confirmed planes were being forced to stop halfway at airports in New Caledonia and Vanuatu to make the journey back to Australia and Fiji.Sources had told the ABC the contamination related to an excessive electrical charge in a batch of fuel stored at the airport.The source indicated it could be resolved soon or escalate into a more significant issue.The ABC also reported pilots had been told the problem may continue until the end of the month.Fiji Airports did not confirm to the ABC the cause of the contamination issue.A spokesperson said they were making "operational adjustments" and the airport was "closely monitoring the current aviation fuel situation"."Nadi International Airport remains open and operational, with established safety and operational protocols being maintained," it told the ABC.-ABC with additional reporting by RNZ