Train derailed in Northfield, Vermont, four reported injured. This train runs from Washington, D.C. to Vermont.

Last reported position of Amtrak's Vermonter, reportedly derailed. pic.twitter.com/Q764nL0eHV

— Dave Stroup (@DaveStroup) October 5, 2015

Train derailment in VT this morning on my way to New Jersey. Im fine and as far as Ive heard only… https://t.co/IgpR88o6IQ

— Ian Trupin (@Kalumakenge) October 5, 2015

Update:

Looks like it was due to a rock slide.

Via Daily Mail:

The Amtrak passenger train which derailed in Northfield, Vermont, on Monday morning was sent hurtling by a ‘freak’ rock slide, the governor has said.

Four people were hospitalized after the southbound train flew off the tracks and into a ditch 10 miles south of the state capital Montpelier at 10am.

On Monday afternoon, Gov Peter Shumlin told reporters there was a rock on the track that could not have been avoided even if brakes were applied, adding: ‘this really was a freak of nature’.