A local civic group asked the prosecution Friday to look into suspicions that government officials got free upgrades from the country's top airline, Korean Air Lines Co., which is at the center of controversy over an air-rage incident.
Cho Hyun-ah, the eldest daughter of Korean Air chairman Cho Yang-ho, resigned earlier this month after a national uproar over her conduct aboard a Seoul-bound Korean Air flight at New York's John F. Kennedy International Airport.