President Yoon Suk Yeol’s ill-fated bid to impose martial law has created a power vacuum in his governing camp, pushing the country deeper into what analysts call a constitutional crisis.

South Korea's leadership crisis deepened on Sunday as prosecutors named President Yoon Suk Yeol as a subject of a criminal investigation over last week's martial law attempt, a media report said, and his former defence minister was arrested.

Veteran South Korean broadcaster Kim Ou-joon said he left home and went into hiding minutes after President Yoon Suk Yeol declared martial law last week in a televised announcement. Fearing for his life,