Three Qatari nationals claimed to have carried out surveillance prior to attacks, The Telegraph quotes leaked US cable.
قال تعالى:
وَأَنَّ هَٰذَا صِرَاطِي مُسْتَقِيمًا فَاتَّبِعُوهُ ۖ وَلَا تَتَّبِعُوا السُّبُلَ فَتَفَرَّقَ بِكُمْ عَنْ سَبِيلِهِ