She would not comment any further.
Kiwibank's internet banking and mobile app were loading slowly for a few hours this afternoon, but a spokesperson said it was an internal issue.
On social media, the bank said it was due to a network issues, and staff were aware of an issue with its mobile app and internet banking not working.
A spokesperson said the issue was not linked to recent cyber attacks in New Zealand, which shut down the New Zealand Stock Exchange, and failed to impact media websites Stuff and RNZ.
"We apologise to our customers for any inconvenience this may have caused them," Kiwibank said.
The National Cyber Security Centre yesterday warned of an attack targeting financial institutions.
- RNZ