After studying the jinchūriki of Shukaku of the time, he recreated its sand-manipulating powers by combining his own magnetic chakra and iron powder, which produced the Iron Sand technique. At some point, Sasori kidnapped and killed the Third Kazekage in order to turn him into a human puppet. According to Sasori, the effort involved in the Third's capture made it his favourite puppet. Sunagakure was not aware of what Sasori had done and searched earnestly for his whereabouts. However, with the ongoing war, the village was forced to choose a Fourth Kazekage, though they still attempted to search for him in later years. It was not until the start of the Fifth Kazekage's reign, did his fate become known.