The Panathinaiko Stadium is the site of the first modern Olympic Games in 1896 and is due to stage the finish of the marathon race at the 2004 Games.
Greek police believe that the cache belonged to the Nov. 17 terrorist group.
Preparations for the Olympic Games in Athens in 2004 were dented yesterday when anti-terrorist police found a small quantity of explosives buried near the city's 19th century marble stadium.
