Prime Minister Anthony Albanese has suggested Scott Morrison swore himself into further portfolios as Nationals leader David Littleproud called on the former prime minister to give a public explanation of his decision to take on additional responsibilities in secret saying the Australian public deserved to know.

Albanese said he would receive additional information from the Department of Prime Minister and Cabinet on Tuesday morning but “there may well be more”.

“I’ll have more to say when I’m properly briefed,” Mr Albanese said on Radio National on Tuesday morning.

Albanese said he had no questions for Governor-General David Hurley who said in a statement on Monday he acted on Morrison’s advice when he swore him into the additional portfolios.

“The governor-general’s role is to take the advice of the government of the day. He did that. He’s issued a statement and I don’t intend to pass judgement there. I think the blame for this lies fairly and squarely with the former government. Other ministers knew this was going on and chose not to make this public.”

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Scott Morrison took on the portfolios of then-health minister Greg Hunt, then-finance minister Mathias Cormann and then-resources minister Keith Pitt while prime minister without publicly announcing that decision to the Australian public.

Albanese said he was “not aware” of Morrison being paid for his additional duties but he “doubted” that would have been the case.

Nationals leader David Littleproud said Morrison needed to give a public explanation of the actions he took.