Police said they had found the stash of ammonium nitrate and fuel oil in a garage registered to a name found on a false identification card seized in raids last week that led to the arrest of six suspected members of the group.
"It is a quite big quantity," police spokesman Thanassis Kokkalakis told Reuters. "It could have brought down a 6-storey apartment block."
Police said the explosive was the same type used in a bomb claimed by Revolutionary Struggle that seriously damaged the Athens Stock Exchange last year.
Prosecutors have charged the six with participating in bomb attacks, participating in a terrorist group, attempted murder, and other crimes. The accused have denied any wrongdoing.
Saturday, April 17, 2010; 1:28 PM