Islamic State militant group could theoretically face court for war crimes under a process established by a unanimous UN Security Council vote on Thursday.
The British-brokered resolution followed a letter from the Iraqi government submitted to Secretary General Antonio Guterres in August, asking for UN support to prosecute the extremist militia organisation.
The document urged Guterres to establish an investigative team to collect, preserve and store evidence of war crimes, crimes against humanity and genocide committed by Islamic State in Iraq.
It stated that Iraqi investigative judges and other criminal experts would be appointed to the team to work alongside international experts.
The document also stated that the Security Council could authorise the team to collect evidence in other countries where Islamic State was suspected of having committed war crimes.