Well, obviously not. But surely it is something that will cause people (like us) to speculate? I agree that BE is not the most trustworthy source, but I'm going with it here because he is a journalist, after all.
Why would anyone consider a murderer's words upon arrest to be evidence of anything at all? Except, perhaps, concern about what's happening to his own family. That was my point.
And I think the concern might be real, if they did indeed knowingly help in any way after the fact. That's where my mind went, as well as minds of other persons. Not as evidence for anything - but of his concern (and to me, his longterm desire to blame someone else for everything that goes wrong in his life).