I have explained to you Adam, you take it far too far! For a start, why does the bike have its own crime scene? Surely you can see that's a bit much! 
Well I created a thread several weeks ago on the bike being forensically tested. And why should there be incriminating evidence on it, a month after the crime.
Should I have asked this question on an unrelated thread ?
Anyway, several posters discussed this issue. Including you.