well u can't rule out any possibilities, the video shown on TV pointing out a man who is sstanding next to BB's bodygaurd on the stage while she was making her speech in liaqat bagh hinting out to some one with his eye movement and other gesture that BB would is about to die, where is that man, closer security ring for BB has been PPP's arrangement, that man standing so close to BB is bound to be some from PPP ranks, .........
you can't say anything who killed BB, it would be mystery just like other incidents that happened in the past ........