During the war, Seck committed many atrocities for which he was later sentenced to serve life in prison by a West German court.
[1] Seck made it a habit to meet, at the Šķirotava Railway Station, trains of Jews deported from Germany, Austria, or Czechoslovakia.
[1] Seck also traveled about Latvia, the Baltic states and Belarus with Nazi convoys to fight partisans or liquidate various camps and ghettos.
[1] Seck was responsible for selecting between 1600 and 1700 Jews from among the Jungfernhof concentration camp inmates to be transported, on 26 March 1942, to the Biķernieki forest to be murdered in what became known as the Dünamünde Action.
The accused repelled her with a movement of the hand and began to shoot the Jews one after the other with a shot in the back of the neck from a distance of 2 to 3 metres.