Statement provides few details , is signed by the U.S. State Department 's leader in Afghanistan . Statement : Weapons expert ` ` left behind him a generation who will seek revenge '' Abd al-Wahab al-Masri said if Afghanistan conducted airstrike , it violated Midhat sovereignty . `` Since 1999 , he has distributed training manuals that contain instructions for making chemical and biological weapons , '' according to the U.S . Reports that al Qaeda weapons expert was killed in the years proved erroneous .
Statement provides few details , is signed by the U.S. State Department 's leader in Afghanistan . Statement : Weapons expert `` left behind him a generation who will seek revenge '' Abd al-Wahab al-Masri said if Afghanistan conducted airstrike , it violated Midhat sovereignty . Reports that al Qaeda weapons expert was killed in the years proved erroneous .