Since the impeachment motion at the National Assembly failed, President Yoon Suk Yeol's office had remained silent as of press time Sunday.

Yoon's office express no opinion about the vote, which ended 9:20 p.m. Saturday after falling short of the 200 votes needed to pass. Neither did it make any public announcement concerning Yoon's decision based on his power to appoint or sack a Cabinet member under the Constitution.

The Ministry of Interior and Safety announced that the Interior Minister Lee Sang-min stepped down from his post as Yoon accepted his offer to resign.

It is highly unusual for the presidential office to make no announcement to the press concerning a decision to name or dismiss a ministerial-level figure.

Yoon has also named Oh Ho-ryong as first deputy director of the National Intelligence Service to replace Hong Jang-won, who was sacked just before Yoon's martial law declaration.

Yoon's office was not immediately available for comment.

Meanwhile, none of Yoon's official schedules have been announced to the public.

According to the Prime Minister's Office on Sunday, the regular closed-door lunch meeting between Yoon and Prime Minister Han Duck-soo was canceled.

Yoon last made a public appearance through a televised address to the nation on Saturday at 10 a.m., where he vowed to "confront (his) legal and political responsibility" for his surprise declaration of martial law Tuesday that lasted for six hours until Wednesday morning.

The president added that he would "entrust (his) power to the (ruling) party to stabilize the political situation," adding the party would take joint responsibility with the government for state affairs.

Earlier on Wednesday, all of Yoon's aides, including Chief of Staff Chung Jin-suk, Director of National Policy Sung Tae-yoon and national security adviser Shin Won-sik, offered to step down from the post, along with the Cabinet members.