\"Obviously, there was a lot of mayhem,\" he told WPVI. \"People were pretty banged up. There was a lot of blood, a lot of bleeding. I pulled myself up. The guy who I kind of landed on was OK. The guy next to him was completely passed out, knocked unconscious.\"

Murphy said the unconscious man came to, got off the train and began to help other people. Murphy said to his knowledge, most people had gotten off the train as of 11:15 p.m.

\"PHOTO:
WPVI
PHOTO: Emergency personnel work the scene of a deadly train wreck, May 13, 2015, in Philadelphia.
>

Paul Cheung, an Associated Press employee who was also on the train, said it appeared the train went off the tracks. He said he was fortunate to be at the back of the train and the front \"looks pretty bad.\"

\"The front of the train is really mangled,\" he said. \"It's a complete wreck. The whole thing is like a pile of metal.\"

Delaware Sen. Tom Carper -- who is a former Amtrak board member -- got off the train in Wilmington, just before the crash.

He said in a video today, \"I go back and forth on the train almost every day. Catch and early morning train and usually get out of D.C. on a train in the evening and be able to sleep in my own bed every night in Delaware. That’s what I did last night. I was doing my emails and had the television on and the news story broke that the train had just derailed north of Philadelphia. Just 30 minutes after I got off. And the visuals were very graphic and horrible.\"

Carper added, \"I had been on the train about an hour earlier from when I started seeing it be reported on the news and my initial reaction was concern for a lot of people I knew on the train... I prayed for a lot of people last night, and I still am.\"

ABC News’ Elizabeth Hur, Josh Margolin, Aaron Katersky and Pierre Thomas contributed to this story.

Get real-time updates as this story unfolds. To start, just \"star\" this story in ABC News' phone app. Download ABC News for iPhone here or ABC News for Android here.

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