Tasmania's Opposition Leader Bryan Green has been labelled a "bumbling Inspector Clouseau" over his pursuit of the Damien Mantach row.

Mr Mantach was forced to resign as the party's state director in 2008 after using a party credit card for $48,000 worth of personal expenses.

He repaid the money but it did not appear on the party's annual return.

He is now being investigated in a separate matter for allegedly stealing $1.5 million from the party's Victorian branch between 2010 and 2014.

Key points: Mantach used party credit card to pay $48,000 in personal expenses

Mantach used party credit card to pay $48,000 in personal expenses Green seeking legal advice on responsibilities of Hodgman, Abetz

Green seeking legal advice on responsibilities of Hodgman, Abetz Hodgman dodged questions about the issue

Hodgman dodged questions about the issue Green said Hodgman "cannot divorce himself" from the Liberal Party

Mr Green has sought further legal advice on the fiduciary responsibilities of Premier Will Hodgman and the state's most senior Liberal, senator Eric Abetz, as members of the Liberal Party's executive.

But the Liberal Party's state director Sam McQuestin ridiculed Mr Green's attack.

"Mr Green asked police to look into the Mantach issue. Now like some sort of bumbling Inspector Clouseau he thinks he can do a better job than them," he said.

"It's just a pity Mr Green didn't pay as much attention to managing the state's budget and economy when he was deputy premier in the disastrous Labor-Green government."

Mr McQuestin said he dealt with issue last week and there were no further questions to answer.

"I provided a full explanation of the circumstances surrounding the departure of Mr Mantach," he said.

"And as the matter is potentially subject to a police inquiry, I don't intend to enter into a public debate with Mr Green on every specious claim he puts forward."

Green argues Hodgman right man to answer questions

Mr Hodgman was opposition leader at the time and a member of the party's executive.

He said the only advice he was given was that Mr Mantach had "a liability" and the issue was being dealt with.

When asked about the affair again on Saturday he said the questions should not be directed at him.

"Those matters, as I've said repeatedly, and as Bryan Green knows, are for the party organisation, not for the parliamentary leader — me," Mr Hodgman said

But Mr Green argued Mr Hodgman is the right man to answer the questions given he was, and still is, a member of the party's executive.

"Our view is that he cannot divorce himself away from his Liberal Party," he said.

"He is a member of the administration when decisions were made around Mr Mantach and therefore he has to take some responsibility.

"I am seeking further legal advice with respect to the fiduciary responsibilities of both Will Hodgman and Eric Abetz as members of the executive of the Liberal Party."

On Friday the party's state director, Sam McQuestin, referred to the matter as "an administrative oversight".

"Oversight by who? Was it audited?" Mr Green asked in response.

The paperwork shows three sums of more than $10,000 each from Mr Mantach.

Mr Green has asked Tasmania Police to investigate the circumstances surrounding Mr Mantach's resignation.