Explosion startles man filming fire

A CSX freight train derailed after hitting a commercial truck near Baltimore on Tuesday. The collision created an explosion that was felt and heard blocks away.

One witness, Eric Beverly, was driving toward the fire when there was a sudden blast. He's heard narrating on a video as he and his friend try to figure out what caught on fire. Immediately after the boom he yells "Back up!" as they urgently turn to head in the other direction.

Officials say the contents of the train pose no risk to the community. The truck's driver was seriously injured in the crash and taken to a hospital. The cause of the accident was not immediately clear.