South Korea's suspended President Yoon Suk Yeol did not respond on Wednesday to a second summons by anti-corruption authorities who, along with prosecutors, are investigating his short-lived martial law decree issued early this month.

South Korea’s President Yoon Suk Yeol again declined to appear for questioning by investigators over his martial law declaration as the embattled leader seeks to first defend himself at an impeachment trial.

President Yoon Suk Yeol failed to appear before South Korea's Corruption Investigation Office for High-ranking Officials on 18 December. He faces charges of inciting insurrection through martial law imposed on 3 December.

The motion passed with a decisive 204-85 vote, triggering the suspension of Yoon's presidential powers and duties.

South Korean President Yoon Suk Yeol made international headlines when he declared martial law in his country in a shock late-night move that saw Army troops move to see key buildings and infrastructu

South Korea's main opposition party vowed on Tuesday to impeach acting president Han Duck-soo but reversed an earlier plan and decided to wait until later in the week, party officials said, as the risk of further political uncertainty heightened.