French authorities urged calm after a series of attacks across the country left dozens of people injured, and said there was no evidence the violent acts were connected by any terrorist motive.

In the latest incident, 11 people were injured after a driver crashed his van into a crowded Christmas market in western France Monday evening. The driver then stabbed himself several times and is among five people hospitalized in serious condition, authorities said.

The attack, in the town Nantes, came after a pair of weekend attacks: one in which another driver ran down 13 bystanders in the city Dijon in eastern France, and one in which a recent convert to Islam knifed police officers outside the city of Tours.

Speaking on French television, Interior Ministry spokesman Pierre-Henry Brandet said the driver in Nantes "deliberately crashed into the crowd."

ABC News