Prosecutors have asked for South Korea's former president Yoon Suk Yeol to be handed a death sentence if he is found guilty over his botched attempt to impose martial law.

A court in Seoul heard closing arguments in Yoon's trial, in which he was accused of being the "ringleader of an insurrection".

The charge stems from Yoon's attempt in December 2024 to impose military rule in South Korea - an act that lasted just hours but plunged the country into political turmoil. He was later impeached by parliament and detained to face trial.

Yoon has denied the charges against him, arguing that martial law was a symbolic gesture to draw public attention to the wrongdoings of the opposition party.

Leading an insurrection - the most serious charge against Yoon - carries the death penalty or life imprisonment and under South Korean law prosecutors must ask the judge for one or the other for the crime of insurrection.