It’s a question that doesn’t seem to have any basis in fact. No-one could know if the bike had been chipped or not, and the suspicion that it had been seems to have come from just rumour.
I've replied in the 'Electric bikes' thread and have edited my post above, as we shouldn't use this one for discussion (as I should have remembered earlier).
These are probably just the initial charges. Charges can change as the investigation progresses.