Cho is accused of yelling at the ad firm manager and of throwing water at his face during a meeting last month. She has denied the claim and insists she only pushed him.

She is the younger sister of Hyun-ah, who gained global notoriety for the "nut rage" incident in 2014. She forced a plane back to the boarding gate at New York's John F. Kennedy International Airport because she was upset with the way her nuts were served -- in an unopened bag instead of on a plate.

The Korean Air chief recently offered a public apology and dismissed his two daughters from all of their corporate posts.

Still, the chairman's actions did not mitigate public outrage as fresh allegations have surfaced over physical and verbal violence by his wife, Lee Myung-hee. (Yonhap)