The Mongols attacked Samarkand using captured enemies as body shields. After several days only a few remaining soldiers, loyal supporters of the Shah, held out in the citadel. After the fortress fell, Genghis supposedly reneged on his surrender terms and executed every soldier that had taken arms against him at Samarkand. The people of Samarkand were ordered to evacuate and assemble in a plain outside the city, where they were killed and pyramids of severed heads raised as a symbol of victory. Ata-Malik Juvayni, a high official in the service of the Mongol empire, wrote that in Termez, on the Oxus, "all the people, both men and women, were driven out onto the plain, and divided in accordance with their usual custom, then they were all slain".