Davros's trial (War of the Daleks)

Following the Imperial-Renegade Dalek Civil War, Davros, formerly the Emperor Dalek, was placed on trial held on Skaro by the Dalek Prime, who sought to remove any supporters of Davros from the Dalek race. However, those Daleks loyal to Davros turned on the Dalek Prime and a civil war broke out. In the end, Davros' forces were defeated, and Davros was apparently executed by matter dispersal, although the Spider Dalek responsible for Davros's sentence had actually been converted to his cause earlier. (PROSE: War of the Daleks)