President Yoon Suk yeol attends the third hearing of his impeachment trial at the Constitutional Court in Seoul, Jan. 21. Yonhap

Impeached President Yoon Suk Yeol arrived in a convoy at the Constitutional Court on Thursday to attend the fourth hearing in his impeachment trial.

It will mark the second time Yoon personally appears at a hearing on his shocking, albeit short-lived, imposition of martial law on Dec. 3. He first attended a court hearing in person Tuesday.

The convoy departed from the Seoul Detention Center in Uiwang, south of Seoul, and arrived at the court in Seoul as the fourth hearing session was scheduled to begin at 2 p.m.

Thursday's hearing will also be attended by former Defense Minister Kim Yong-hyun, who was arrested last month over his alleged role in the declaration of martial law.

Yoon's lawyers chose Kim as a witness for the trial.

During Tuesday's hearing, Yoon denied ordering martial law troops to pull out lawmakers from the National Assembly during the martial law bid.

Yoon is currently detained at the detention center after a Seoul court granted investigators a warrant for his formal arrest Sunday.

The impeached president's legal team has said Yoon will be present at all remaining hearings if possible. (Yonhap)