Colombian Defense Minister , Juan Manuel Santos , speaks at a press conference in Bogota , Colombia , 25 May 2008 . Santos considered that the deceased former head commander of Revolutionary Armed Forces of Colombia ( FARC ) , Pedro Antonio Marin , real name of ' Tirofijo ' or aka ' Manuel Marulanda Velez ' was an ' obstacle ' to any kind of peace attempt and ' that he died isolated ' and finally asked that guerrilla to allowed an autopsy to establish the real causes of his death . EPA / GUILLERMO LEGARIA < 저작권자 ⓒ 2007 연 합 뉴 스 . 무단 전재 - 재 배포 금지 . >< 연합뉴스 긴급 속보 를 SMS 로 ! SKT 사용 자 는 무료 체험 ! >