Former senior vice president of Korean Air, Cho Hyun-min, returned home early Wednesday after being grilled for 15 hours by police over allegations that she yelled and threw a drink at a business associate.

As she stepped out of the Gangseo Police Station in Seoul, Cho said she sincerely took part in the investigations over charges of assault and obstruction of business. 

Cho has been accused of throwing a glass cup and then a plum drink in a paper cup at participants during a meeting with a marketing firm in March, after flying into a tantrum over the firm manager’s inability to answer her questions.

She is said to have testified to police that she threw the glass cup toward the direction where there were no people, apparently to avoid being charged with assault.