Statement provides few details , is signed by al Qaeda leader in Afghanistan . Statement : Weapons expert ` ` left behind him a generation who will seek revenge '' Pakistani government said if US launched airstrike , it violated Pakistani sovereignty . Reports that al Qaeda weapons expert was killed in 2006 proved erroneous .
Statement provides few details , is signed by al Qaeda leader in Afghanistan . Statement : Weapons expert `` left behind him a generation who will seek revenge '' Pakistani PM said if U.S. conducted airstrike , it violated Pakistani sovereignty . Reports that al Qaeda weapons expert was killed in 2006 proved erroneous .