Impeached South Korean President Yoon Suk Yeol, in a message to conservative supporters rallying outside his Seoul residence, vowed to “fight to the end” against “anti-state forces,” while his legal team warned Thursday that police officers attempting to detain him could face arrest by his presidential security service or even civilians.

The impeached president faces an attempt by authorities to arrest him over his short-lived Dec. 3 martial law.

Supporters of suspended South Korean president Yoon Suk Yeol blocked access to his office on Thursday in an attempt to prevent his arrest, the Yonhap news agency reported. It said police had violently broken up a blockade by around 30 supporters who had broken through a barrier near the president's residence in the South Korean capital Seoul.