Former Rep. Patrick Murphy, D-Pa., is tweeting from inside a derailed train near Philadelphia under the handle @PatrickMurphyPA. Murphy said heok but that others are injured nearby.

Philadelphia Fire Department reports multiple injuries after 8 to 10 train cars derail - @NBCPhiladelphia

Train cars reported rolled over after Amtrak train partially derails in Philadelphia - @Jim_Gardner, @PatrickMurphyPA