Former President Moon Jae-in and his wife are under investigation by prosecutors over allegations that their son-in-law received preferential treatment in securing a job at an airline company. Legal sources have revealed that authorities executed a search warrant to track the financial accounts of the couple, following a complaint filed against them four years ago. The focus of the investigation seems to be on determining whether the former president and his wife provided financial assistance to their daughter's family, particularly their son-in-law. The son-in-law, surnamed Seo, has been interviewed as a witness multiple times this year but has declined to testify. Prosecutors are contemplating changing his status to that of a suspect. The controversy centers on Seo's hiring as managing director of Thai Eastar Jet Airline, despite his lack of experience in the industry and the company's struggling performance at the time. The prosecution is also looking into a financial transfer from Moon's daughter to a Blue House security officer, as well as any potential connection between a government appointment and Seo's employment at the airline. A prosecutor involved in the case stated, "Based on the court-issued warrant to trace the account, we are carefully investigating with a minimal scope to establish the substantive truth. It is difficult to disclose the progress of other investigations."