Philadelphia-- One car is mangled, three rail cars are overturned and three others are a twisted mess following an Amtrak train derailment in Philadelphia that killed at least six people.
All seven cars of Northeast Regional Train 188 ended in disarray Tuesday night, sending 144 people to hospitals. At least six are in critical condition.
The National Transportation Safety Board expects to have full crews at the scene Wednesday morning to try to determine what happened.
The train was carrying 238 passengers and five crew members as it headed from Washington to New York City along the nation's busiest rail corridor.
Amtrak has had to modify Northeast Corridor service. Trains will run between Washington and Philadelphia, Harrisburg and Philadelphia, and New York and Boston. There will be no Amtrak service between New York and Philadelphia. New Jersey Transit will honor Amtrak tickets between New York City and Trenton.