A criminal investigation has been initiated in Paris after reportedly "clandestine" luxury dinners have been taking place in France's capital and the elite brazenly ignoring coronavirus rules they themselves had set amid surging numbers of infections across France and a looming crisis within the state's hospitals.

The M6 private channel Friday broadcast a report based on footage recorded with a hidden camera purportedly from a clandestine restaurant in a high-end area of Paris where neither the staff nor the diners were wearing masks.

All restaurants and cafes remain closed in France for eating in, and the country this week began a new limited nationwide lockdown to deal with surging Covid-19 infections.

The hashtag #OnVeutLesNoms (We Want the Names) went viral on Twitter, as speculation swirled over who may have attended such dinners.

Paris prosecutor Remy Heitz said Sunday that a criminal probe had been opened after the report due to putting the lives of others at risk.

The investigation would assess "if these evenings were organized in defiance of health rules and to determine who were the possible organizers and participants."

One source interviewed by M6, whose identity was not revealed and whose voice was distorted, told the channel that such evenings had taken place and guests present had even included ministers.

The source was later identified by media and bloggers as Pierre-Jean Chalencon, who runs the luxury Palais Vivienne event venue in the center of Paris.

In a statement sent to AFP through his lawyer late Sunday, Chalencon implicitly acknowledged he was the source but also appeared to retract the claim ministers were involved, saying he was only showing "humor" and the "sense of the absurd".

But the report was no laughing matter for members of the government, days after President Emmanuel Macron ordered new restrictions, including a brief closure of schools, to keep cases down before the effects of the vaccine drive kick in.

Chalencon had been recorded saying in February that government spokesman Gabriel Attal, a rising cabinet star, would be attending such a dinner. Attal vehemently denied the claim.

But deputy interior minister Marlene Schiappa told French TV that if ministers or lawmakers were involved "they should be fined and penalized like any other citizen".

Economy Minister Bruno Le Maire insisted, "All the ministers, without exception, respect the rules."

Interior Minister Gerald Darmanin said those involved in such dinners should be prosecuted if the allegations in the report were true.

"There are not two types of citizens – those who have the right to party and those who do not," he said.