South Korean authorities have searched the headquarters of Korean Air as part of an investigation into alleged tax evasion by the family of the company's chairman, the Yonhap news agency reported on Thursday.
A Korean Air spokesman confirmed the raid on the offices in Seoul but did not give any details.
The family of Korean Air chief executive Cho Yang-ho has also been accused of smuggling luxury goods into the country. The airline headquarters have been searched before in connection with those allegations.
The family has repeatedly made headlines. It reportedly failed to pay tax on a recent inheritance.
The chairman's youngest daughter allegedly assaulted an ad executive at a business meeting. Cho Hyun-min, a senior Korean Air executive and daughter of Cho Yang-ho, was accused of shouting at the executive and throwing water in his face at a meeting in March.
Her sister Cho Hyun-ah was jailed in 2014 after delaying a flight in New York because she was upset by the way her nuts were served. The scandal became known as the "nut rage" incident.
Both had to step down from their management positions with the airline.
Investigators are also combing family accounts amid allegations of company funds being illegally channelled into private coffers.
Korean Air Lines Chairman Cho Yang-ho is seen at a Seoul court in this file picture.
