The initial prosecution of war criminals was established between 1919 and 1920 by the Turkish Committee of Union and Progress which charged and tried several former leaders and officials for subversion of the constitution, War profiteering, and with what is now called genocide against both Pontic Greeks and Armenians. At the same time the British Foreign Office conducted its own investigation into alleged Turkish war crimes, as they doubted that the process was being adequately dealt with by Turkish courts martial.