Amtrak 'Southwest Chief' derailment in Kansas

[Green_Elite_Cab]

I was under the impression that a car accident on the grade crossing (not involving any trains) had damaged the track a little while before the train arrived. Apparently this damage went unreported.

Edit:

A feed truck dragged the rails over a whole foot. Can't say it's Amtrak's fault, nor BNSF. The truck driver either didn't know or didn't own up.