An elderly woman who lost $10,000 is among more than 20 victims who have been scammed in the past few months by overseas callers.
Police are warning people to be vigilant and wary of calls from these overseas scammers and not to ever hand over their personal details.
Auckland City Financial Crime Unit Detective Sergeant Kelly Corby said Operation Hyattsville was looking into more than 20 complaints from victims who have lost tens of thousands of dollars due to phone scammers.
On average each victim had lost about $30,000.
Auckland resident Marion had $10,000 taken from her account after a caller convinced her that there was an urgent issue with her Spark account and they needed to access her computer remotely to fix the issue.