South Korea's impeached President Yoon Suk Yoel has appeared in court to defend his decision to declare martial law.

South Korea's impeached president, Yoon Suk Yeol, was formally arrested early Sunday, days after being apprehended at his presidential compound in Seoul, as he faces possible imprisonment over his ill-fated declaration of martial law last month.

A court in Seoul has extended the time South Korea's impeached president Yoon Suk Yeol will be detained over his botched attempt to impose martial law in the country last month. Citing concerns Yoon could destroy evidence if released,