SEOUL, South Korea (AP) — South Korea’s national police chief and top police officer for the capital, Seoul, were detained for their roles in enforcing President Yoon Suk Yeol’s short-lived martial law decree last week, police said Wednesday.

The development comes hours before the main liberal opposition Democratic Party submits a new motion to impeach Yoon on the martial law introduction. The party said it aims to put the motion on a floor vote on Saturday.

Earlier, Yoon’s former defense minister, Kim Yong Hyun, was arrested after a Seoul court approved an arrest warrant for him on allegations of playing a key role in rebellion and committing abuse of power. Kim became the first person arrested over the Dec. 3 martial law decree.