The Kwon Chang-yeong Second Special Investigation Team has summoned former Audit Board member Yoo Byung-ho as a suspect on suspicion of improper audits in the process of relocating the presidential office during the Yoon Suk-yeol administration. The special investigation team suspects that 21 Grams, the company that oversaw the construction, was responsible for not only interior design but also expansion, but intentionally omitted this fact from the audit report. In particular, Yoo Byung-ho is suspected of improperly intervening in the audit process to reduce or conceal the results. The special investigation team plans to investigate Yoo Byung-ho on the progress and instructions of the audit, as well as the involvement of "higher authorities" such as the presidential office.