This is reported by the radio station Europe 1, citing its sources.

It is noted that the detentions occurred in the city of Brest in the west of the country.

According to the radio station, during the searches the police did not find weapons or explosives.

Also, the police do not know what exactly the detainees planned to attack.

Earlier, Dutch police detained two men in Zoetermeer and The Hague planning to carry out an attack using explosive devices.