The ACC is asking a person alleging to have been sent a list of information about other claimants to come forward, in a new potential mass privacy breach by the state-owned accident insurer.
"Well, well, well I have just received my IT Sweep with a list of names regarding review dates and reason for review and claim numbers, what shall I do??" a claimant named chroy wrote on ACCforum this week, after seeking copies of all ACC's files on their claim.
ACC's privacy officer Miriama Henderson called on chroy to come forward and return the information.
Chroy posted that the matter was being dealt with accordingly and that it was not morally right to tell anyone anything.
ACC spokeswoman Stephanie Melville told NZ Newswire that ACC was continuing to investigate the matter and until the person came forward the insurer was unable to confirm if there had been a privacy breach.
If there was a privacy breach the Privacy Commission and affected claimants would be informed.
"The person hasn't come to us and that is frustrating," she said.
The ACC's chairman, chief executive and three board members have resigned as part of the fallout from a mass privacy breach earlier revealed by claimant Bronwyn Pullar.
The Auditor-General's office and private auditors are investigating how information about 6700 claimants was sent to Ms Pullar.
KPMG auditors and Integrity Solutions, led by former Australian federal privacy commissioner Malcolm Crompton, are due to report to the Privacy Commissioner and the ACC board on August 23.
Cabinet minister Nick Smith also resigned his portfolios over a conflict of interest after it was revealed he supported Ms Pullar in her compensation claim case.