Relations between Paris' Mayor Anne Hidalgo and President Macron appear to be strained, with the former not invited to some Olympic-related meetings, including the visit of International Olympic Committee President Thomas Bach to the French capital in July.

Several Ministers have criticised the Socialist Party Mayor's management of the city, and Transport Minister Clément Beaune told Europe 1 that placing Paris under guardianship was "not excluded".

"It's very serious," Beaune said.

"I wouldn't wish for [guardianship] as it would be an extremely negative last resort and I'm attached to freedom, autonomy of local authorities and responsibility in politics."

Beaune also criticised the 50 per cent increase in property tax in Paris, which broke a campaign promise.

Paris' First Deputy Mayor Emmanuel Grégoire hit back at Beaune's remarks,

"There is no legal justification for referring to the 'supervision' of the City of Paris," he wrote on Twitter.

"Only populism counts, dirtying, 'existing' in the nauseating one-upmanship.

"Once again, the Ministers have an open table without being given the opportunity to respond."

Paris' debt stands at €7.7 billion (£6.6 billion/$7.9 billion).

The Paris 2024 Organising Committee's estimate for its operating budget is expected to rise by 10 per cent to €4.4 billion (£3.8 billion/$4.5 billion), partly due to high inflation.