Complex sentence: Vujković had been a high-ranking official in the pre-war Belgrade police; he was involved in the persecution of Communists in Yugoslavia even before the outbreak of the World War II. He is said to have participated in interrogations and devised numerous humiliating torture techniques.
Split into simpler sentences: Vujković had been a high-ranking official in the pre-war Belgrade police. He was involved in the persecution of Communists in Yugoslavia even before the outbreak of World War II. He is said to have participated in interrogations and devised numerous humiliating torture techniques.