South Korean prosecutors have opened an investigation into President Yoon Suk Yeol, his interior minister, and the now-former defence minister over their roles in an attempt to impose martial law, Yonhap news agency reported on Thursday.
Kim Yong-hyun, who resigned as South Korean defence minister over his involvement in Tuesday's martial law order, also faces a travel ban as prosecutors investigate, Yonhap said. The other two do not face such bans.
Citing unspecified threats from "anti-state forces" and obstructionist political opponents, Yoon imposed martial law for about six hours before reversing course after parliament voted to oppose the move.
Yoon now faces an impeachment vote on Saturday.

Trump says deal reached to disarm Hamas, Israeli support for plan remains uncertain
Kuwait says Iranian attack hits Chinese company building, kills one
Japan quake snarls auto and chip supply chains as toll hits 34
Death toll rises to at least 34 after blast at Pakistan coal mine complex
