Fath Connection to Dubai Assassination?

I'm really interested to see if the Dubai killing by Mossad agents will eventually be linked to Fath and/or Dahlan. Hamas has issued and then retracted a few different statements in the last few days. I will post comments, if the truth on this ever comes out. I don't see it creating support for Hamas in Palestine, if true, but it could be the end of any appearance of legitimacy for Abbas.....not that it matters.