(LEAD) Ex-President Yoon questioned over messages to justify failed imposition of martial law

Former President Yoon Suk Yeol has been questioned by investigators regarding his communications concerning a failed attempt to impose martial law. The questioning is part of an ongoing probe into the circumstances surrounding the incident. Authorities are examining messages and other communications to understand the decision-making process and justification for the proposed martial law.

The investigation aims to clarify the former president's role and the rationale behind the actions taken during that period. Details of the questioning and the specific messages reviewed have not been fully disclosed.

This investigation is significant as it scrutinizes the actions of a former head of state and the potential abuse of power related to a critical constitutional matter.