My father left his family around this time to avoid deporation. He never saw them again. Dad was nearly 21. They had been warned that he was on the list for removal to Siberia. As far as I know from his papers he stayed around Estonia for a while, then left for Finland and Sweden.
“On 14 June 1941, the Soviet Union deported more than 10,000 people from Estonia to Siberia, in one of the darkest chapters of the country’s history – among them were over 7,000 women, children and the elderly; the date is now marked annually as a national day of mourning.
In the summer of 1940, the Soviet Union occupied and forcibly annexed Estonia, together with Latvia and Lithuania, acting in accordance with the secret protocols of the Molotov–Ribbentrop Pact.”
Link