Events will be held in Vilnius and other places across Lithuania to mark the date.

Soviet repressive structures started mass deportations of Lithuanian residents into remote northern areas at 3 a.m. on June 14, 1941. Some 18,000 Lithuanian residents were deported over the course of several days, according to the Genocide and Resistance Research Center of Lithuania.

The Soviet Union occupied Lithuania on June 15, 1940, and imprisoned and deported some 280,000 Lithuanian citizens over the occupation period.