The duty-free store located in the 123-story skyscraper, which generated 611.2 billion in sales in 2015, ended operations on Monday after it failed to renew its license in a November bid.

Lotte, the world's No. 3 duty-free operator, also faces tougher competition as local retailers have opened several new outlets in Seoul to court deep-pocketed Chinese travelers amid the flagging domestic consumption.

Shinsegae Department Store last month opened a new duty-free store in Myeongdong next to Lotte's main outlet, fueling competition in the highly coveted area.

To cater for the growing needs of travelers, the Seoul government plans to issue four new operating licenses for duty-free stores within this year.

Lotte is one of the strong candidates by capacity, but it remains unclear whether Lotte World Tower can get a second chance in the upcoming competition as prosecutors have looked into lobbying allegations linked with its duty-free unit. 

Shin Young-ja, the head of Lotte Foundation and daughter of group founder Shin Kyuk-ho, has been under probe on suspicions of receiving kickbacks from the chief of cosmetic brand Nature Republic in return for favorable space in duty-free shops.

Hotel Lotte, the hotel and duty-free operator unit of Lotte Group, had to cancel its planned initial public offering earlier this month as prosecutors have widened their investigation into the nation's fifth-largest conglomerate over slush fund allegations. (Yonhap)