The chief of security for South Korean President Yoon Suk Yeol said on Sunday he could not cooperate with efforts to arrest the impeached leader, in remarks that could push the political crisis towards another high-stakes confrontation.

Thousands of South Korean citizens were gathering on Sunday near impeached President Yoon Suk Yeol’s residence a day before an arrest warrant for him expires.

South Korean investigators trying to arrest suspended President Yoon Suk Yeol have less than 24 hours before their warrant expires, with the embattled leader holed out in his residence surrounded by loyal security forces.