Following the 1939 invasion of Poland, which started World War II, the region was occupied by Nazi Germany, and from 26 October 1939 to 1945 as "Löbau" was administered as part of Regierungsbezirk Marienwerder in the new province of Reichsgau Danzig-West Prussia. The Polish population was subjected to various repressions and atrocities. The "Einsatzgruppe V" carried out mass searches of houses, offices etc. in September 1939. On 7 December 1939, the "Selbstschutz" carried out a public execution of 10 Polish inhabitants. The Nazi regime housed in Löbau a German concentration camp for children; it was liberated on January 21, 1945, in the final months of World War II, when the Red Army captured the region. After the end of war Lubawa was again part of Poland where it remained since then.