The results of a Conservative Party disciplinary inquiry into an MP who attended a Nazi-themed stag party will not be published until French prosecutors have completed their own criminal investigation into the incident, the party said.

However the probe by senior officials is not believed to have concluded that Aidan Burley, who represents Cannock Chase, should have the Tory whip withdrawn.

A party spokesman said the in-house inquiry into Mr Burley's role, ordered by Prime Minister David Cameron, had been completed but that its report, originally scheduled for publication this month, had been postponed.

"It would be inappropriate to release the report's findings while French police are continuing their own investigations," he said.

Mr Burley lost his job as a parliamentary private secretary after media reports of the December 3 party in a restaurant in the French Alpine resort of Val Thorens, at which one guest is alleged to have dressed in an SS uniform and others are said to have chanted Nazi slogans.

The French probe is looking at allegations of defending war crimes or crimes against humanity; promoting racial hatred; wearing the uniform of an organisation that carried out crimes against humanity and making racist insults.

The Cannock Chase MP has repeatedly apologised for being present at the event, but said in December: "I do not believe I have broken any French law and have distanced myself from the behaviour of other people on the stag."