On the 29th, Kim Keon-hee's special investigation team sent a public notice to the warden of the Seoul Detention Center requesting cooperation for former President Yoon Suk-yeol to appear at 10 a.m. on the 30th. The request was made after Yoon's legal team did not comply with the first summons scheduled for 10 a.m. that day.
The special investigation team noted in a notice sent to reporters around 10:30 a.m. that, "Although we notified former President Yoon to appear at 10 a.m. today, he did not show up without any explanation," and that "a request for cooperation in the investigation was sent again to the warden of the Seoul Detention Center for Yoon to appear at 10 a.m. tomorrow."
The special investigation team informed former President Yoon on the 21st that he should appear as a suspect in the violation of the Public Official Election Act on that day. However, after former President Yoon did not attend the scheduled summons investigation, the special investigation team demanded again that he appear the following day, the 30th.
Former President Yoon is alleged to have received public opinion surveys for free from political broker Myung-tae Kyun in exchange for helping former People Power Party lawmaker Kim Young-sun get nominated in a by-election held in the same year during the 2022 presidential election process.
A previously released transcript contains former President Yoon stating to Myung on May 9, 2022, the day before the People Power Party's by-election nomination announcement, that "I have been working hard for Kim Young-sun since the primary, so please help Kim Young-sun a bit. There are a lot of comments about it at the party," and added, "I will mention it once more to Sang-hyeon (Representative Yoon Sang-hyeon). He is the chairman of the nomination committee."
In relation to this, the special investigation team has secured related materials by searching the residences and offices of Representative Yoon Sang-hyeon, who was the chairman of the People Power Party's nomination committee during the by-election, and Lee Jun-seok, leader of the Reform Party.
Representative Yoon reportedly stated in the special investigation team's inquiry on the 27th that he "had a currency conversation related to Kim's nomination" with former President Yoon.