South Korea's Constitutional Court on Friday unanimously upheld President Yoon Suk Yeol's impeachment over his disastrous martial law declaration, stripping him of office and triggering fresh elections after months of political turmoil.

Yoon, 64, was suspended by lawmakers over his December 3 attempt to subvert civilian rule, which saw armed soldiers deployed to parliament. He was also arrested on insurrection charges as part of a separate criminal case.

Millions of Koreans watched the court hand down its verdict live on television, with the country's main messaging app KakaoTalk telling AFP that some users were experiencing delays due to a sudden surge in traffic.

"Given the serious negative impact and far-reaching consequences of the respondent's constitutional violations... (We) dismiss respondent President Yoon Suk Yeol," acting court President Moon Hyung-bae said while delivering the ruling.

Yoon's removal, which is effective immediately, triggers fresh presidential elections, which must be held within 60 days. Authorities will announce a date in the coming days.

The decision was unanimous, and the judges have been given additional security protection by police. Outside the court, AFP reporters heard Yoon supporters shouting........

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