Several French cities extended curfews through Tuesday night after the measures helped quell days of riots and looting, as the government sought to reassure a rattled country ahead of fresh protests expected later in the week.

“These localized curfews are efficient,” Prime Minister Sébastien Lecornu told lawmakers on Tuesday, after cities like Paris, Marseille and Lille enacted restrictions on nighttime movements in some neighborhoods. “They helped to restore calm last night,” he added.

Mr. Lecornu also vowed that there would be a “massive” security deployment for further demonstrations planned for Saturday.

The French state is trying to reassert its authority after the country’s largest riots in years. Several government buildings were attacked and more than 3,000 shops were looted in unrest that started on Saturday, leading to the arrest of more than 2,500 people across France, officials said. About 1,000 police officers and gendarmes were injured over the weekend, according to Mr. Lecornu.

The attacks and looting spun off from massive, largely peaceful protests about school conditions and the rising cost of living.

In an attempt to address some of the cost-of-living concerns, the office of President Emmanuel Macron of France said on Tuesday that he had secured the delivery of an additional 200,000 tons of diesel per month from the United Arab Emirates and Bahrain while in the Gulf region.