NILES, Mich. – We now know the official cause of an Amtrak crash last fall in Niles that injured 14 people.

The National Transportation Safety Board says the October 21, 2012 crash in Niles involved signal maintenance operations. 

The NTSB has issued recommendations to address the improper use of jumper wires during maintenance and repairs that apparently contributed to causing the crash.

The train in Niles derailed when it ended up on the wrong track due to a reversed switch.