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 law enforcement officials have requested a court warrant to detain impeached President Yoon Suk Yeol as they investigate whether his short-lived martial law decree this month amounted to rebellion.

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.