Transport Canada appoints an observer to help oversee the investigation into a CN train derailment northeast of Montreal. The derailment occurred last weekend near Repentigny, Que., on the edge of a residential neighbourhood. Multiple railcars leave the tracks, with one report citing that 49 railcars derailed. Transport Canada says it is closely monitoring the measures taken following the incident as investigators proceed with the inquiry. City News Toronto reports that no hazardous materials were involved, and highlights that the department is monitoring how the response and remediation efforts are carried out in the area where the derailment happened. Global News similarly states that an observer has been appointed to oversee aspects of the investigation, reflecting the federal role in rail safety oversight. Overall, the reports describe a coordinated investigation led by relevant authorities, with Transport Canada monitoring the steps taken after the derailment in the days following the incident.