The mayor announced this on the air of BFMTV.

"I ordered to maintain contact with the clergy and other religious leaders of our city, so that all the churches in the city would be monitored and closed, like other places of worship," TASS quotes him.

Earlier in Nice, a man stabbed people with a knife.

According to the latest reports, at least three people were killed in the attack.

Estrosi said that all the circumstances of the incident indicate that the attack is a terrorist act.

French President Emmanuel Macron has already traveled to the crisis center set up after the attack.