At least one person is dead in a knife attack at a train station in Marseille in the south of France, according to local media reports.
Anti-terrorism police are investigating and France's interior minister Gerard Collomb has said he will travel immediately to the scene
Police in the city warned of and ongoing situation at the station at around 1.30pm (British summer time) and had told people to stay away from the area.
Authorities later said the attacker had been "neutralised and shot".
Prime Minister Theresa May offered condolences to the people of France and Canada, where five were injured in what police are describing as a potential "terror incident" involving a car and knife attack.
"We stand by your side against those who seek to destroy our way of life," May said.