A video from nice appeared on Twitter, where an unknown person attacked people with a knife.
The footage shows the work of emergency services. Police blocked traffic in the area of the incident.
The attack occurred around 9: 00. According to preliminary data, three people were killed and several injured.
According to Reuters, one woman was beheaded.
The attacker was detained. Mayor Christian Estrosi admits that it was a terrorist attack.
He also said that President Emmanuel Macron and Prime Minister Jean Castex are due to arrive in nice.