Does ETA have plans to attack Madrid’s olympic venues? That is the question being raised by Spanish police after rough plans of the stadia and village under construction were found in the backpack of a presumed member of the Basque separatist group.Interior Minister José Antonio Alonso explained the find: “They had a list of six poorly defined targets, four of which were sports facilities in Madrid, the Olympic stadium and others still being built which are part of the project, for which they only had the address.” The two men include Pedro Esquisable Urtuzaga, alias Xerpa, who is suspected of being ETA’s head of international operations, and Jose Manuel Ugartemendia Isasa, who is claimed to be his accomplice. They are thought to have been based in a quiet village near Toulouse in southern France. Police arrested the men yesterday when they came back to a laundrette to reclaim a backpack they had left behind. According to reports in the Spanish press the bag contained a gun, false papers, and details of the buildings being built for Madrid’s Olympic bid downloaded from a website.