An Amtrak passenger train derailed Monday near Northfield, Vermont, injuring six people, officials said. There were no fatalities.
Dana Huoppi, a spokeswoman with the Montpelier Fire Department, said at least two cars went off the track and over an embankment.
The train, the Vermonter, was headed from Vermont to Washington, D.C.
Federal investigators said the preliminary cause of the accident was a rock slide in the path of the train. A full investigation to confirm the cause is underway, officials said.
Passengers said they could feel the train jerk just before it went off the tracks, according to CNN affiliate WFFF.
Many climbed out of widows and wandered the tracks with their luggage until emergency crews arrived.
The train had one locomotive and five coaches with 98 passengers and four crew members when it derailed, according to Investigators.
Central Vermont Medical Center hospital treated six patients in its emergency department a hospital spokesman said.
One crew member had serious injuries and five others had minor injuries, officials said.
