At least one person was killed and another injured in Marseille when a car crashed into two bus shelters in different parts of the French city.
Police had advised the public to avoid the Old Port area where the driver, a 35-year-old man, was arrested.
A prosecutor later said the crash was not, for now, being treated as a terror incident.
The driver is known to police for minor crimes and had psychological issues, a police source said.
He first hit a bus shelter around 8.15am (7.15am Irish time) in the 13th arrondissement in the northern part of the city, before hitting a second bus shelter an hour later in the 11th arrondissement, several kilometres south.
Marseille's prosecutor Xavier Tarabeux said that investigators had no "element pointing to a terrorist attack" and that the driver was believed to suffer from "psychiatric" problems.
"He was found with a letter from a psychiatric clinic and we are leaning towards treating it as a mental health case," Mr Tarabeux told AFP.
