Train at 100mph derails killing seven

Federal investigators have said that preliminary data showed an Amtrak train in Philadelphia was travelling at more than 100 miles (160km) per hour, or roughly twice the speed limit, when it derailed, killing seven people and injuring more than 200.

The National Transportation Safety Board’s (NTSB) disclosure came as investigators pored over video footage and data from the black box aboard the train that crashed late Tuesday.

The NTSB has said it was also focusing on the condition of the tracks and equipment, crew training and the performance of the five-person crew.