The Rail Accident Investigation Branch (RAIB) says it is continuing its work following a fatal train crash. According to reports, the investigation will involve a “full, independent safety investigation” into what happened. Updates on the aftermath indicate that multiple passengers are receiving treatment, with nine people reported to be in critical condition. The sources do not describe additional details about causes, the operator, or the circumstances leading to the crash. The RAIB is the body responsible for conducting independent investigations focused on safety, including examining evidence such as operational records and incident factors. Emergency response and medical treatment are ongoing, and officials continue to provide information about the condition of those affected. While the reports agree on the existence of an independent RAIB safety investigation and the critical status of nine patients, they provide limited further specifics in the available accounts.