Police in the French port city Marseille are trying to determine if a van was intentionally driven into a bus shelter Monday, killing a woman.
The 35-year-old male driver from Grenoble, who was not identified by name, was being treating for psychological problems, authorities said.
French media report the vehicle had earlier slammed into a different bus shelter nearby, injuring one man there, before it struck the second shelter.
The vehicle's driver was arrested at the scene.
The two bus stops in Marseille, France's second largest city, were about five kilometers apart.
"At the moment we have no information on the motives of this individual," a police source told Reuters.