Rioters set fire to a bank and ransacked stores on Paris’s landmark shopping street in a new flare-up of violence as France’s yellow vest protests against President Emmanuel Macron and his pro-business reforms entered a fourth month.

Police fired tear gas and water cannon as the protests turned violent again after weeks of relative calm during marches, which had seen declining numbers of participants.

A Banque Tarneaud branch spewed flames before firefighters arrived and rescued two people from the building, with 11 suffering minor injuries, the fire department said.

Two news-stands on the Champs Elysees avenue caught fire and bonfires burned in the streets.

Protesters threw cobblestones at riot police through clouds of tear gas in front of Paris’s Arc de Triomphe monument, which was ransacked at the peak of the protests in December.

Police had arrested more 120 protesters by late afternoon as demonstrators looted stores around the Champs Elysees and ransacked the high-end Fouquet’s restaurant.

A barricade burns on the Champs Elysees in Paris. French yellow vest protesters clashed Saturday with riot police near the Arc de Triomphe as they kicked off their 18th straight weekend of demonstrations against President Emmanuel Macron. Photograph: Christophe Ena/AP Photo

Famed Paris restaurant Fouquet’s burns on the Champs Elysees during a yellow vests demonstration on Saturday. Photograph: Christophe Ena/AP Photo

The interior ministry estimated 10,000 people had participated in the protest in Paris, compared with 2,800 the previous Saturday. Elsewhere in France, protesters were estimated at 4,500, compared with 4,200 last week.

Interior minister Christophe Castaner said that although the protest was relatively small, there were more than 1,500 “ultra violent” people out looking for trouble.

“They decided, perhaps as a swansong, to come attack – and I use their words – Paris,” he said, adding more than 1,400 police officers were mobilised.

‘Great firmness’

“I’ve given instructions to the police this morning for great firmness so that nothing slips by,” he added.

A separate, peaceful march against climate change through central Paris drew as many 30,000 people, the interior ministry estimated.

A protester throws a bottle during the yellow vest demonstration in Paris on Saturday: Photograph: Philippe Wojazer/Reuters

A yellow vest protester gestures in front of a newsagent set alight during clashes with riot police forces on the Champs-Élysées in Paris on Saturday. Photograph: Zakaria Abdelkafi /AFP/Getty Images

French riot police forces walk past a scooter seen in a broken store window as they clash with Yellow Vest protesters on the Champs-Élysées in Paris on Saturday. Photograph: Alain Jocard/AFP/Getty Images

Yellow vest protesters have promised to draw bigger numbers to mark the fourth month since the movement erupted in mid November, protesting against since-scrapped fuel tax hikes and high costs of living.

Named after the high-visibility vests which French drivers are obliged to keep in their cars and are worn by protesters, the revolt swelled into a broader movement against Mr Macron and his reforms.

The weekly demonstrations, held every Saturday in Paris and other cities, had been generally getting smaller since December, when Paris saw some of the worst vandalism and looting in decades.

After the spike in violence, Mr Macron offered a package of concessions worth more than €10 billion aimed at boosting the incomes of the poorest workers and pensioners.

His government ordered police to crack down on the protests in January, leading to complaints of police brutality.

The 41-year-old former investment banker also launched a series of national debates which are aimed at determining what policies people want the government to focus on. – Reuters