Winston Peters has defended the expulsion of NZ First list MP Brendan Horan from the party, saying it was the right call even if he is cleared of allegations he misused his late mother's money.
The NZ First leader yesterday faced criticism from other party leaders that he had acted too quickly.
Mr Peters said phone records that emerged yesterday showing Mr Horan used a parliamentary funded cellphone to call a betting service were proof the MP was not fit to be a member of the party.
The Herald yesterday saw call records for Mr Horan's parliamentary cellphone which showed 11 calls to an Auckland TAB number over the space of four days in early April.
The Herald understands Mr Horan also made 12 calls within four hours to a betting service on February 28.
Mr Horan said there was no restriction on calls made on parliamentary phones, but Mr Peters said that comment was "just staggering".
He said it was improper use of the phone, especially when there was a free 0800 number to place bets.
Mr Peters said he had acted on other information about Mr Horan which justified dumping him even if he was not charged over money taken from his mother's accounts.
"I stand by my decision based on the evidence that I had and I'm confident that I have acted in the interests of Parliament, the nation and my party and I do not resile from that," he said.
Forensic accountants are reported to be examining Olwen Horan's bank statements for evidence to back up allegations by Mr Horan's half-brother Mana Ormsby that Mr Horan took their mother's money to buy takeaways, hire DVDs and to fund his gambling.
The Herald understands lawyers acting for Mrs Horan's estate will decide whether to a lay a complaint with police in about a week.
Maori Party co-leader Tariana Turia said Mr Peters had jumped the gun by expelling Mr Horan before the allegations were proved.
Green Party co-leader Russel Norman agreed.
"I do think we need to respect natural justice ... I don't think kicking people out just on the basis of some allegation is a just outcome," he said.