Article 70 of the Rome Statute grants the International Criminal Court jurisdiction over “offences against the administration of justice”, or what the ad hoc tribunals refer to as “contempt of court”. However, the Appeals Chamber has not yet elaborated on the substantive elements of article 70 offences. The Appeals Chamber has, however, resolved some procedural matters as part of its interlocutory litigation. This chapter briefly dissects how the Appeals Chamber addressed these matters which include the mandate of the Prosecutor to initiate and prosecute these offences, and the offences’ overall seriousness vis-à-vis the crimes of genocide, crimes against humanity and war crimes as well as misconduct before the Court.