Police are set to question the Korean Air heiress involved in the 'water rage' scandal as a suspect over allegations she th rew water at an ad agency employee.<br /> Cho Hyun-min ,... who's the younger daughter of the airline's chairman Cho Yang-ho ,... will be questioned Tuesday on charges of assault and obstruction of business,... after being booked and banned from overseas travel last month. <br />Police are expected to question Cho regarding whether she threw water or a glass of water at the ad firm manager during a meeting.<br />Officials say Lee Myung-hee the wife of the chairman, who is at the center of a different scandal regarding the verbal and physical abuse of employees, may face questioning as well. <br />
