Amtrak has confirmed that its "Vermonter" train derailed while heading southbound in Vermont on Monday. NBC News reports the accident happened about 10 miles south of Montpelier, in Northfield; the Burlington Free Press reports the train hit a rockslide. A rep for the Montpelier Fire Department tells NBC that five cars apparently derailed, with two going over an embankment. See two extreme photos here and here. The story is developing, but NBC quotes the rep as saying there are four reported injuries thus far. The Vermonter runs daily between the northwestern part of the state and Washington, DC. (More Vermont stories.)