A fragment of rail was found on the track in northwest France, with the possibility of a malicious act being treated as the main line of inquiry as a result, a source said. Investigators suspect that a train derailment in northwest France which injured 44, one gravely, was the result of sabotage, a police source told AFP on Saturday. Key points and original sources are listed below.

• A fragment of rail was found on the track in northwest France, with the possibility of a malicious act being treated as the main line of inquiry as a result, a source said.S1

• Investigators suspect that a train derailment in northwest France which injured 44, one gravely, was the result of sabotage, a police source told AFP on Saturday.S2