JAKARTA: Seven Indonesians were hospitalized after rinsing their hands in acid, police said Tuesday as they hunted for the self-styled sorcerer who promised the men it would make them invincible. The bizarre ritual last week left the men with serious burns on their hands, authorities said. A mystery man named Didi, who moved into the village several months ago, claimed he was a master of traditional magic—known as Debus— which is supposed to protect a person from physical injury. The self-proclaimed magician offered free lessons and promised to make the unlucky men invincible. “These men were trying to become invincible with a man who claimed to be a ‘guru’,” local police chief Harry Kurniawan told Agence France-Presse on Tuesday. To test that promise, Didi suggested that the men rinse their hands in a chemical that police believe was acid. It was not long before the men were rushed to hospital with severe burns, Kurniawan added. The self-styled guru fled shortly after the group was hospitalized. He could face five years in prison if convicted of negligence leading to injury.