An official ceremony honored the more than 4,300 Polish officers killed in the World War II Katyn massacre and a new inscription didn't blame either the Nazis or the Soviets for the atrocity.

Instead, the tablet that was unveiled Tuesday at Warsaw's Powazki Cemetery said only: "To Polish officers killed in Katyn." The previous inscription blamed "Hitlerite fascists."After the ceremony ended, some people among the several thousand spectators placed a sign on the granite memorial reading: "Soviet murder."