Complex sentence: His death led the government to target the National Awami Party of Khan Abdul Wali Khan, which banned the party and arrested its leaders on the charge of his murder, a charge they were eventually acquitted off.
Split into simpler sentences: His death led the government to target the National Awami Party of Khan Abdul Wali Khan. This political party was banned and some of the party leaders were arrested on the charge of his murder, a charge they were eventually acquitted off.