Former President Yoon Suk Yeol, already ​accused of insurrection, faced additional ​criminal charges after a special counsel expanded the investigation into his ill-fated declaration of martial law.

SEOUL, South Korea — A South Korean court early Thursday approved the new arrest of former President Yoon Suk Yeol on charges related to his brief imposition of martial law in December, accepting a special prosecutor’s claim that he poses a risk of destroying evidence.

A South Korean court on Thursday ordered the arrest of former President Yoon Suk Yeol over his alleged attempt to impose martial law last year, placing