▁of ▁Say f ▁al - Ad el ▁was ▁recovered ▁during ▁a ▁ra id ▁in ▁Sa udi ▁Arab ia ▁in ▁ 2 0 0 4 . ▁The ▁di ary ▁details ▁the ▁D eta ine e ' s ▁invol vement ▁in ▁the ▁ 1 1 ▁September ▁ 2 0 0 1 ▁terror ist ▁plot ▁and ▁subsequent ▁attack . ▁ ▁In ▁addition , ▁the ▁paragraph ▁continued : ▁ ▁The ▁D eta ine e ▁is ▁listed ▁as ▁a ▁" high ly ▁professional ▁j ih ad ist " ▁along ▁with ▁" 9 / 1 1 ▁hij ack ers ", ▁Moh ammed ▁Att a ▁and ▁Z i ad ▁Jar rah . ▁The ▁di ary ▁states ▁that ▁the ▁three ▁were ▁brief ed ▁on ▁an ▁operation ▁involving ▁aircraft ▁by ▁Ab u ▁H af s , ▁a ▁senior ▁al ▁Q a ida ▁pl anner . ▁ ▁In ▁December ▁ 2 0 1 0 , ▁Adel ▁alleg edly ▁sent ▁a ▁series ▁of ▁five ▁letters ▁to ▁Ab u ▁Wal id ▁al ▁Mas ri , ▁then ▁under ▁house ▁arrest ▁in ▁Iran . ▁He ▁discuss es ▁the ▁War ▁in ▁Afghan istan , ▁critic ises ▁the ▁religious ▁fail ings ▁of ▁the ▁mu j ah id in ▁and ▁hyp oc ris y ▁of ▁Islam ic ▁sch ol ars , ▁and ▁the ▁failure ▁of ▁the ▁J ih ad ist ▁movement ▁to ▁learn ▁from ▁previous ▁mistakes . ▁Al ▁Mas ri ▁posted ▁the ▁letters ▁on ▁the ▁Internet ▁in ▁December ▁ 2 0 1 0 . ▁In ▁March ▁ 2 0 1 1 , ▁Adel ▁alleg edly ▁released ▁another ▁five ▁letters ▁through