The security service, along with military troops, yesterday prevented prosecutors from arresting Yoon Suk Yeol in a six-hour standoff inside Yoon’s compound.

The investigators secured the warrant to arrest Yoon over his brief declaration of martial law last month.

The corruption investigation office for high-ranking officials, which is investigating the case, said today it had again asked acting president Choi Sang-mok, the nation’s finance minister, to order the presidential security service to cooperate with the warrant.

A finance ministry spokesman declined to comment.

The police asked the chief of the presidential security service, of Park Chong-jun, to appear for questioning on Tuesday, Yonhap News reported.

Yoon’s Dec 3 martial declaration stunned South Korea and led to the first arrest warrant to be issued for a sitting president.