South Korea's suspended president Yoon Suk Yeol authorised the military to fire their weapons if needed to enter parliament during his failed bid to impose martial law, according to a prosecutors' report seen by AFP on Saturday.

President Yoon Suk Yeol Yoon imposed martial law in the middle of the night earlier this month, plunging South Korea into its worst political crisis in decades.

According to the prosecution indictment report, now suspended president Yoon Suk Yeol told the chief of the capital defence command that military forces could shoot if necessary to enter the National Assembly.