SEOUL (Reuters) - A top South Korean military commander said on Tuesday he trusted President Yoon Suk Yeol to be making a legitimate decision when he declared martial law, but declined to say if the impeached leader gave orders to "drag" lawmakers out of parliament.

Yoon, a former prosecutor, plunged democratic South Korea into political turmoil when he declared martial law on December 3, suspending civilian rule and sending soldiers to parliament.

Yonhap news agency says South Korean prosecutors have indicted the impeached President Yoon Suk Yeol over his imposition of martial law.

Yoon Suk Yeol has faced South Korea's constitutional court for the first time, following last month's martial law saga.

The Constitutional Court is separately deliberating whether to formally dismiss Yoon Suk Yeol as president or reinstate him. Yoon was impeached and suspended by the assembly last month.

South Korean investigators asked prosecutors to indict the country's detained President Yoon Suk Yeol over his short-lived imposition of martial law last month, as it accused him of rebellion, abuse of power and obstruction of parliament on Thursday.

Impeached President Yoon Suk Yeol asked a court Tuesday to cancel his arrest over his brief imposition of martial law. Yoon's legal defense team submitted the request to the Seoul Central District Court as it prepares to hold the first preparatory hearing of his criminal trial on Feb.

Prosecutors assert that President Yoon Suk Yeol directed officials to cut off the supply of electricity and water to left-leaning news organizations that had criticized his administration.