Cave attempted further negotiations with Khalid, but these failed and Rawson sent an ultimatum, requiring him to haul down his flag and leave the palace by 09:00 on 27 August or he would open fire.
Cave fortsatte at forsøge at forhandle med Khalid, men dette mislykkedes, og Rawson sendte et ultimatum, som krævede, at Khalid skulle fire flaget og forlade paladset inden kl. 09.00 27. august, ellers ville de åbne ild.