Four people including a 16-year-old girl were arrested on Friday by anti-terrorist police in Montpellier in southern France on suspicion of preparing an attack, a police source said.
"An attack has been foiled," said the source, adding that the four were arrested after buying acetone, a highly flammable liquid that can be used to make bombs.
The other suspects were aged 20, 26 and 33, the source said.
"It seems that they intended to go through with it and to make several explosive devices," the source said.
France remains on high alert after a wave of attacks which began two years ago that has claimed more than 200 lives.
Last week, a soldier shot and wounded a machete-wielding attacker who lunged at him outside the Louvre museum in Paris while shouting "Allahu Akbar".
Investigators have identified the man as an Egyptian and are trying to establish whether he had any link to a jihadist group.
LEAVE A COMMENT Your email address will not be published. Required fields are marked*
Blood test may accurately predict Alzheimer's: study
No Covid-19 vaccine, no normal life, UK minister suggests
French police charged over black man's beating
WHO warns malaria fight flat-lining
French officers face charges over beating case
England at risk of third Covid wave in new year, says Raab
French ship pulls 45 migrants from Channel
Darth Vader actor Dave Prowse dead at 85
Pope installs new cardinals