Wife of South Korea's jailed ex-president arrested

The article reports that the wife of South Korea's former president, Lee Myung-bak, has been arrested. This unprecedented event marks the first time in the country's history that a former first couple is simultaneously incarcerated. The arrest of Kim Yoon-ok, the spouse of ex-president Lee Myung-bak, comes as part of an ongoing corruption investigation. Lee himself is currently serving a 17-year prison sentence for bribery and embezzlement charges. The article notes that the arrest of the former first lady is a significant development, highlighting the gravity of the corruption allegations against the previous administration. It suggests that the South Korean government is taking a firm stance against high-level political misconduct, regardless of the individuals' past positions of power. The concise summary covers the key facts of the news, including the arrest of the former first lady, the ongoing corruption investigation, and the unprecedented nature of a former first couple being jailed simultaneously in South Korea.