Two minors were among those arrested near Lyon on suspicion of recruiting young women to fight in Syria.
The pair, aged 15 and 17, were arrested on suspicion of helping a 14 year-old girl travel to Syria to join jihadist forces.
Cars were set alight and rocks thrown at police, who reported 14 officers injured, in clashes after the outlawed protest at Israel's Gaza offensive.
Algerians in France celebrated their team's achievement in reaching knockout stages; there were 74 arrests as some fans clashed with police.
The son-in-law of wealthy property owner Hélène Pastor is also among those being questioned following her ambush murder in May in Nice.
The four were detained in Marseille over allegations that they have been helping to recruit volunteers for radical Islamist networks in Syria.
Six people have been arrested for attacks on individuals performing the 'quenelle', a gesture associated with anti-Semitism, on social networks.
Veterinarians and other meat industry workers are suspected of selling for human consumption meat from horses used for medical research.
The 45 people arrested in France and in French overseas territories were detained as part of an operation targeting international traffickers.
French investigators unraveling the harrowing case of an infant girl found in the boot of a car believe she may have been hidden there since birth.
The man suspended himself in a tent from the second floor of the monument in protest against Russia's detention of 30 of the group's members.
Prosecutors in Burgundy say a network of counterfeiters sold at least 400 bottles of cheap wine as Romanée-Conti for a total of 2 million euros.
The arrests in Paris were in connection with the theft this month of gold worth about 1.6 million euros from a Zurich-bound Air France flight.
The mother, who made a tearful appeal for her missing five-year-old daughter, has admitted the girl is dead after she and four others were arrested.
Managers of former meat processing firm Spanghero detained for questioning as authorities continue inquiry into the mislabeling of beef as horse.