A technical investigation has been launched into the derailment of a regional train near Rouen that left 44 people injured, as authorities work to establish how a piece of rail came to be lying on the…

La police judiciaire de Rouen a été saisie d'une enquête en recherche des causes de blessures graves, a annoncé le parquet.

The train derailed between Rouen and Caen in Normandy, northwest France, on Friday evening. France's transport minister cautioned that the casualty toll was "provisional."