That would indicate they did come on the train then really, because they’ve been seen doing that journey
Have they? Is that in local news reporting, because it doesn't seem to be in the police statements
As an aside, the average weight of a British man is around 80kg.
It's hard, even for a man, to carry suitcases much above 40kg. I mean, I know weightlifting records are much higher, but that's with specific kit and just to hold on one spot, not to lug around.
So I think it would have been a struggle to get cases on and off public transport of any kind, even if they did not contain the complete bodies.
Presumably the police are looking at who the deceased were, and where they were in the days leading up to and the first part of Wednesday. If reported missing, where did they go missing from?