A bus carrying Romanians from Spain blew a tyre and overturned in southern France on Sunday, killing a baby girl and injuring more than 40 people, some seriously, local officials said.
The accident happened at 0740 GMT near the town of Vidauban as the bus, carrying 50 people, travelled towards Nice, police said.
The bus veered across the highway after blowing a tyre, struck another vehicle and tipped over a security barrier. No one was injured in the other vehicle.
According to an updated toll from the local prefect's office, as well as the 18-month-old girl who died during the accident, 30 people suffered light injuries and 12 were hurt seriously, including the bus driver. Seven escaped unharmed.
Authorities sent 120 emergency workers, 30 ambulances and several helicopters to the scene and victims were evacuated to hospitals in Marseille, Nice and Toulon.
Markings on the bus indicated it belonged to Rosu Tour, a transport and travel company based in the northern Romanian city of Bistrita. The Romanian foreign ministry said it had been rented to a company in the eastern city of Suceava, the Mediafax news agency reported.
The bus had departed from Madrid and was heading to Bistrita, Clara Staicu of the Romanian embassy's consular department told AFP, adding that it was running on a regular bus route and was not a tourist charter.
"Our consul in Marseille is at the scene and is putting together a list of the injured persons to contact the families," she said.
Expressing "profound sadness" at the accident, French Interior Minister Manuel Valls said a judicial probe would be held to determine its cause.
Local prosecutor Danielle Drouy-Ayral told AFP it was too early to determine the cause of the accident.
"Was the flat tyre the cause of the accident or a result of it? This is something that needs to be determined. At present, the cause of the accident is not known," she said, adding that witnesses would be interviewed once medical emergencies had been dealt with.