According to the TV channel, the detainee is a 35-year-old local resident.

It is assumed that he communicated with the attacker the day before the attack on the basilica.

Earlier, a 47-year-old man was detained in Nice, who is suspected of having contact with the attacker on the eve of the attack.

On October 29, three people were killed in an attack on parishioners in a church in central Nice.

According to the mayor of the city, Christian Estrosi, the crime was committed by a "radicalized Muslim", he was detained.

Two more knife attacks were prevented in Lyon and Avignon, according to media reports.

French President Emmanuel Macron called the incident a terrorist attack.