Unfortunately, Radić died weeks later of gunshot wounds that were badly treated. At the trial in May and in June 1929 Lune had to fend off charges of complicity to the death of the Croatian member of parliament. After these events, Lune left politics and participated only in the work of Chetnik associations led by Kosta Pećanac. Dragutin Jovanović Lune was killed on July 2, 1932, at a train station in Niš by police agent Stevan Protić, whom he beat up during a luggage check. This murder has to this day remained veiled in suspicion. Lune's family immediately believed that the event was staged by Kosta Pećanac, while some historians have pointed out some other political motive.