I suppose with so many factions now like TTP, Meshud group, Fazlullah group and various other ones it is not surprising that one of them claimed it and the other one denied it.
Indeed, there are so many groups and vested interests involved in the current situation that uncovering truth is comparable to finding a needle in pile of hay and that is exactly why we should not blindly point our fingers to a phantom created for the purpose that it is serving today.
We should also remember that existence of this phantom and its ability to perpetuate itself is more desired by proponents and dispenser of war on terror than by the "terror" itself.
Evacuation of the posts near PAK-AFGHAN border is yet another proof of the seriousness of our so called allies in this war. It was time to strengthen these posts with more boots on the ground so that flux of runaway “Taliban” from Pakistan to Afghanistan could have been stopped.