▁was ▁behind ▁the ▁attacks . ▁These ▁groups ▁have ▁focused ▁their ▁investigation ▁on ▁un exp la ined ▁details ▁and ▁incons isten cies ▁in ▁the ▁Sum mary ▁Report ▁and ▁have ▁expressed ▁ske ptic ism ▁about ▁the ▁truth ful ness ▁and ▁neutral ity ▁of ▁the ▁evidence ▁presented . ▁ ▁Since ▁the ▁bomb ings , ▁the ▁chief ▁opposition ▁party , ▁P P ▁( which ▁lost ▁power ▁in ▁the ▁election ▁in ▁the ▁immediate ▁after math ▁of ▁the ▁bomb ings ), ▁together ▁with ▁conserv ative ▁media ▁in ▁Spain , ▁have ▁over t ly ▁argued ▁the ▁possibility ▁that ▁the ▁Social ist ▁party , ▁the ▁police , ▁the ▁Spanish , ▁French , ▁and ▁Mor oc can ▁secret ▁services , ▁and , ▁of ▁course , ▁E TA , ▁had ▁a ▁role ▁in ▁organisation ▁of ▁the ▁out rage . ▁Not ▁all ▁conserv ative ▁media ▁out lets ▁were ▁involved ▁in ▁this ▁campaign . ▁There ▁is ▁a ▁distinct ▁difference ▁between ▁those ▁who ▁believe ▁that ▁the ▁Spanish ▁Social ist ▁Work ers ' ▁Party ▁( P SO E ) ▁used ▁it ▁for ▁political ▁gain ▁( as ▁it ▁had ▁access ▁to ▁information , ▁either ▁from ▁France ▁or ▁through ▁links ▁to ▁the ▁Police , ▁used ▁to ▁critic ise ▁the ▁government ▁in ▁the ▁after math ▁of ▁the ▁bomb ings ), ▁and ▁those ▁who ▁believe ▁a ▁cons ort ium ▁of ▁the ▁E TA , ▁some ▁groups ▁in ▁the ▁State ▁Security ▁Forces ▁( poss ibly ▁related ▁to ▁the ▁Gru pos ▁Ant iter ror istas ▁de ▁Liber ación ▁( G AL )), ▁the ▁Mor oc can ▁secret ▁services , ▁and ▁the ▁P SO