A knife-wielding man killed at least two women today at the St Charles train station in Marseille, France before police killed the suspect.

The prosecutor’s office reported that the incident is being treated as a terror attack and has been handed over to a special prosecutor in Paris.

Authorities are investigating whether he had links to terror organisations.

The St Charles station is the same one where four Americans studying abroad fell victim to acid attacks month.

The Boston College students, three of whom were studying in Paris and one in Copenhagen, were treated for burns and released.

Police revealed that the attacker was a 41-year-old mentally unstable woman.

She was arrested and hospitalised.