▁rock ▁group ▁Or questa ▁Mond rag ón . ▁The ▁CD ▁with ▁its ▁case ▁was ▁found ▁in ▁a ▁p ile ▁of ▁various ▁other ▁music ▁CD s . ▁The ▁rear ▁of ▁the ▁cover ▁had ▁apparently ▁been ▁used ▁by ▁the ▁legit imate ▁propriet or ▁to ▁warn ▁people ▁when ▁he ▁park ed ▁in ▁the ▁middle ▁of ▁the ▁street , ▁since ▁it ▁had ▁a ▁hand written ▁message ▁that ▁read ▁" I ▁am ▁coming ▁back ▁immediately ". ▁Nevertheless , ▁El ▁Mundo ▁continued ▁to ▁ins ist ▁on ▁the ▁existence ▁of ▁an ▁M CC ▁card ▁in ▁the ▁van . ▁ ▁The ▁Spanish ▁police ▁also ▁assert ed ▁that ▁a ▁card ▁from ▁" Gr á f icas ▁Bil ba ín as " ▁(" B il ba o ▁printing ", ▁a ▁print ▁shop ▁located ▁in ▁Madrid ) ▁found ▁in ▁the ▁van ▁was ▁the ▁source ▁of ▁the ▁alleg ed ▁confusion . ▁ ▁Al leg ed ▁destruction ▁of ▁evidence ▁The ▁passenger ▁cars ▁dam aged ▁by ▁the ▁explos ions ▁were ▁supposed ly ▁destroyed ▁to ▁hide ▁evidence ▁ 4 ▁days ▁after ▁the ▁explos ion ▁and ▁the ▁corps es ▁found ▁in ▁the ▁Leg an és ▁flat ▁were ▁also ▁supposed ly ▁buried ▁without ▁aut ops y . ▁ ▁Additionally , ▁in ▁December ▁ 2 0 0 4 , ▁José ▁Luis ▁Rodríguez ▁Z ap ater o ▁claimed ▁that ▁the ▁P P ▁government ▁er ased ▁all ▁of ▁the ▁computer ▁files ▁related ▁to ▁the ▁Madrid ▁bomb ings , ▁leaving ▁only ▁the ▁documents ▁on ▁paper . ▁ ▁M auss ili ▁Kal aj i ▁ ▁Mobile ▁ph ones ▁used ▁in ▁the ▁bomb ings ▁were ▁un