The top public servant has denied playing a part in payback against ministers who turned on Malcolm Turnbull.

Department of Prime Minister and Cabinet chief Martin Parkinson has denied media reports that the former PM ordered “swift and furious” payback against ministers who turned against him in last week’s leadership battle.

An MP had told News Corp reporters that “brutal and vindictive” treatment followed the decision of some members to switch allegiances from Mr Turnbull to Peter Dutton.

The Australian newspaper said Mr Parkinson sent official notices ordering communications to the ministers’ offices to be cut off immediately after their resignations.

“There is no factual basis for any of these assertions,” Mr Parkinson said in a statement.

He said the public sector adhered to the requirement for departing ministers and their offices to be supported and accorded “utmost courtesy and respect”.

Mr Parkinson has sought a retraction from the paper.

He said the Australian public service had important roles during changes in prime ministership or ministries.

“I am disappointed that our reputation has been called into question by false reporting,” he said.

“I have only observed public servants acting with complete professionalism throughout this week.”