South Korea’s impeached President Yoon Suk Yeol was formally arrested early on Sunday, days after being apprehended at his presidential compound in Seoul. He faces possible imprisonment over his ill-fated declaration of martial law last month.

Supporters of impeached President Yoon Suk Yeol pushed past lines of police to enter the court, some destroying furniture and blasting fire extinguishers at officers trying to suppress them.

Impeached President Yoon Suk Yeol is facing charges of rebellion after he briefly imposed martial law in December. Supporters of the embattled politician broke into a Seoul court and broke windows and equipment.