Information about the massacre began to spread as early as 1943 , due to the activities and works of Helena Pasierbska , Józef Mackiewicz , Kazimierz Sakowicz and others . Nonetheless the Soviet regime , which supported the resettlement of Poles from the Kresy , found it convenient to deny that Poles or Jews were singled out for massacre in Paneriai ; the official line was that Paneriai was a site of massacre of Soviet citizens only . This led some — including Polish Prime Minister Jerzy Buzek — to compare this to the Katyn massacre . On 22 October 2000 , a decade after the fall of communism , in independent Lithuania , an effort by several Polish organizations resulted in raising a monument ( a cross ) to fallen Polish citizens , during an official ceremony in which representatives of both Polish and Lithuanian governments ( Bronisław Komorowski , Polish Minister of Defence , and his Lithuanian counterpart ) , as well as several NGOs , took place
Katyn massacre
Katyn massacre
Ponary massacre