1.   Most of the dead and injured were Hungarian truck drivers riding in a separate carriage just behind the engine of the train pulling their vehicles.

2.   The bombs exploded simultaneously in two separate carriages, police said.

3.   The explosions came seconds apart in two separate carriages.

4.   The simultaneous blasts were in two separate carriages, police said.

5.   The simultaneous explosions were in two separate carriages, police said.