Investigators on Friday halted their efforts to detain impeached South Korean President Yoon Suk Yeol, following an impasse that lasted more than five hours as Yoon’s presidential security service barred them from entering his residence to execute their warrant.

South Korean authorities moved Friday to execute an unprecedented arrest warrant for President Yoon Suk Yeol over his botched attempt to declare martial law last month.

The police are investigating whether President Yoon Suk Yeol tried to lead an insurrection when he declared martial law and plunged the country into crisis.