Suspended President Yoon Suk Yeol said on Tuesday South Korea had been facing an "existential crisis" when he declared martial law last year, remaining defiant and unapologetic as he faced the final day of impeachment hearings that could formally remove him from office.

Yoon, who is in custody at Seoul Detention Center, arrived at the court later than usual, where he is expected to give his final statement. Lawmakers from the ruling and opposition parties both attended the hearing.

SEOUL, Feb. 25 (Yonhap) -- The Constitutional Court will hold the final hearing of President Yoon Suk Yeol's impeachment trial Tuesday, which will present the final arguments of the legal teams of both Yoon and the National Assembly, serving as the prosecution in the case.