The Reserve Bank has confirmed that former deputy governor Geoff Bascand left the bank a week earlier than agreed to over a breach of protocol.
The central bank, responding to a National Business Review article, said Bascand disclosed that he had shared information about its leadership reorganisation to a third party, which was unauthorised and a breach of protocol.
Bascand, who was due to depart in early January, agreed to bring forward his planned leaving by a week.
"Mr Bascand apologised for his actions and accepts it was a lapse in judgement. The Reserve Bank Board and the Minister of Finance have been informed," a bank spokesperson said in a short statement.