In five transports, 4,500 Jews were deported from the Sereď camp to Poland. In 1944, an underground movement was organized in the camp and weapons were smuggled in. Many Jews left the camp and joined the partisans when the camp was opened during the Slovak National Uprising in August 1944. Shortly thereafter, however, the Germans regained control over western Slovakia, and the camp was enlarged under the command of Alois Brunner. Over the next several months during the winter of 1944 and spring of 1945, 13,500 Jews were deported from Sereď to Auschwitz and Theresienstadt. The camp was liberated by the Red Army on 1 April 1945.