The Financial Markets Authority has released a statement saying it is aware of the significant ongoing interest in its CBL Corporation Ltd investigation.
In July the FMA said its investigation of CBL and its directors was ongoing.
In its latest statement it says that given the complexity of the issues and the involvement of other agencies, the investigation process is likely to take some time.
"The FMA is dedicating the required resource to ensure this matter is progressed in a timely way, while maintaining the integrity of the investigation," it says.
"We continue to liaise with the Reserve Bank of New Zealand and Serious Fraud Office, the voluntary administrator of CBL, the liquidator of CBL insurance as well as overseas regulators."