At least one woman has been killed and another injured after a van crashed into two bus shelters in the French city of Marseille.
Police advised the public to avoid the Old Port area where the driver of the Renault Master, a 35-year-old man, was arrested.
The driver first hit a bus shelter around 8:15am in the 13th arrondissement in the poorer northern part of France's second-largest city, before hitting a second bus shelter an hour later in the 11th arrondissement, several miles south.
A woman in her 40s was killed at the second bus stop in front of a KFC restaurant and a man injured at the first, French media said.
BFM-TV said a witness noted the license plate of the van and was able to give it to police.
A motive was not immediately known.
Media reports say the driver was known to police for minor crimes and has psychological issues.
A Marseille police official told PA it is too early to blame the incident on terrorism, but "given the times" it cannot be excluded as a motive.
David-Olivier Reverdy, of the Alliance police union, said all possibilities are currently being studied.
The crash comes just days after back-to-back van attacks in Barcelona and the Spanish resort town of Cambrils killed 14 people.