In 1306, the Chagatai Khanate ruler Duwa sent an expedition to India, to avenge the Mongol defeat in 1305. The invading army included three contingents led by Kopek, Iqbalmand, and Tai-Bu. To the check the invaders' advance, the Delhi Sultanate ruler Alauddin Khalji dispatched an army led by Malik Kafur, and supported by other generals such as Malik Tughluq. The Delhi army achieved a decisive victory, killing tens of thousands of the invaders. The Mongol captives were brought to Delhi, where they were either killed or sold into slavery. After this defeat, the Mongols did not invade the Delhi Sultanate during Alauddin's reign. The victory greatly emboldened Alauddin's general Tughluq, who launched several punitive raids in the Mongol territories of present-day Afghanistan.