South Korean authorities have granted a request to extend a warrant to detain the country’s suspended President Yoon Suk Yeol for questioning over his surprise declaration of martial law last month.

A South Korean court has re-issued a warrant to arrest impeached President Yoon Suk Yeol, the country's corruption investigation agency said on Tuesday. Investigators seeking to question him on allegations of insurrection have struggled to execute a warrant for his arrest.

Impeached South Korean President Yoon Suk Yeol, in a letter to conservative supporters rallying outside his Seoul residence, vowed to “fight to the end” against “anti-state forces,” while his legal te