Even if the LeJ al Almi is based in Pakistan's tribal areas, it is not possible for them to conduct such coordinated attacks deep inside Afghan territory without getting caught, scattered from Eastern Afghanistan, Northern Afghanistan & Southern Afghanistan, simultaneously. They do not have any (real) presence in Afghanistan anyways. It would be difficult for even the Taliban to pull this off. And even if the LeJ al Almi has a presence in Afghanistan, it plays second fiddle to the Al-Qaeda there, meaning it is more likely for the Al-Qaeda in Afghanistan to pull this off than LeJ al Almi.