On 25 July, hours after the parliament adopted the amendments, Serb National Council (SNC) was set up at a political rally in Srb and the Declaration on sovereignty and autonomy of Serbian nation was adopted. On 1 August, the SNC met in Knin, elected Milan Babić as its president and announced a referendum on Serb autonomy in parts of Croatia with Serb-majority populations. It was scheduled for the period from 19 August to 2 September. Croatian authorities declared the plan illegal on 3 August.