1. Mechanical Failure

    Track Flaw Derailed French Train

    Rescuers work at night on the site of a train accident on July 12, 2013 at the railway station of Bretigny-sur-Orge, near Paris. At least six people were killed and dozens injured on Friday after a speeding train derailed at a station in the southern suburbs of Paris, officials said.  AFP PHOTO / LIONEL BONAVENTURE        (Photo credit should read LIONEL BONAVENTURE/AFP/Getty Images)

    Lionel Bonaventure/AFP/Getty

    Authorities believe they have identified the cause of a train crash south of Paris that took six lives on Friday. After the transport ministry ruled out human error, the state rail company acknowledged that the crash was due to a fault in the train tracks. A metal bar connecting two rails had come loose near the Brétigny-sur-Orge station where the train was derailed, injuring thirty passengers, eight of them seriously. Despite the consequences of the crash, the train driver has been praised for averting a worse accident. Investigations are expected to focus on how the bar first came loose.

    Read it at BBC