1 , ▁three ▁weeks ▁prior ▁to ▁the ▁attacks , ▁S ae ed ▁al - G ham di ▁is ▁believed ▁to ▁have ▁used ▁the ▁name ▁" Ab d ul ▁Rah man " ▁to ▁message ▁bin ▁al - Sh ib h ▁online ▁( who ▁was ▁pos ing ▁as ▁a ▁girl friend ), ▁writing : ▁ ▁The ▁first ▁sem ester ▁comm ences ▁in ▁three ▁weeks . ▁Two ▁high ▁schools ▁and ▁two ▁univers ities . ▁... ▁This ▁summer ▁will ▁surely ▁be ▁hot ▁... 1 9 ▁certific ates ▁for ▁private ▁education ▁and ▁four ▁ex ams . ▁Reg ards ▁to ▁the ▁professor . ▁Good bye . ▁ ▁This ▁was ▁said ▁to ▁be ▁a ▁reference ▁to ▁two ▁military ▁targets ▁and ▁two ▁civil ian , ▁and ▁ 1 9 ▁hij ack ers . ▁ ▁Moh amed ▁Att a ▁Bin ▁al - Sh ib h ▁later ▁said ▁that ▁Moh amed ▁Att a ▁had ▁ph oned ▁him ▁on ▁the ▁morning ▁of ▁August ▁ 2 9 . ▁ ▁He ▁said , ▁' A ▁friend ▁of ▁mine ▁gave ▁me ▁a ▁puzz le ▁and ▁I ▁want ▁you ▁to ▁help ▁me ▁out .' ▁I ▁said ▁to ▁him , ▁' Is ▁this ▁the ▁time ▁for ▁puzz les , ▁Moh amed ?' ▁He ▁said , ▁' Yes , ▁I ▁know , ▁but ▁no ▁one ▁else ▁but ▁you ▁could ▁help ▁me .' ▁He ▁said , ▁' Two ▁st icks , ▁a ▁dash ▁and ▁c ake ▁with ▁a ▁stick ▁down . ▁What ▁is ▁it ?' ▁I ▁said , ▁' Did ▁you ▁w ake ▁me ▁up ▁just ▁to ▁tell ▁me ▁this ?'