The investigations, which began on May 17 2013, only concluded until now that the incident was not a result of an attack or foul play in general.
Further investigations began as the National Transportation and Safety Board sent a section of the fractured rail for analysis which will take place in a dedicated laboratory.
The crash damaged the tracks and thus travel in the Northeast was threatened. Before the Metro-North can replace the overhead wires and rebuild the damaged tracks it has to first remove the damaged train cars. As people attention is slowly shifted to restoration and cleanup the Metro-North company announced that its train service will remain suspended between New Haven and South Norwalk until further notice.