French taxi drivers have blocked the roads to Paris airports and the main ring road around the city in a protest against Uber, prompting riot police to fire tear gas at some, the BBC reports.

The drivers set up blockades and burned tires as part of a nationwide strike.

Barriers also appeared around Marseilles and Aix-en-Provence in southeast France.

Uber, a US taxi app, has been expanding its UberPOP ride-sharing service in France despite government objections.

Images from Marseille and Paris showed cars overturned and tires burning in the street.

Aeroports de Paris, the operator of the French capital’s Charles de Gaulle (CDG) and Orly airports, warned passengers to travel by train.