::::::The only source I have found so far to even come close to labeling them as Pakistani is in the very first ref on the article.  It describes the network as "an Afghan and Pakistani insurgent group" on pages 1 and 7.   
 ::::::I would be in support of removing the label "Afghan" from the article's first sentence since someone can read the article and make his or her own determination of nationalities, but in no way should "Afghan" be replaced by "Pakistani."