By Joyce Lee and Ju-min Park SEOUL (Reuters) -Hundreds of supporters of South Korea's arrested president, Yoon Suk Yeol, stormed a court building early on Sunday after his detention was extended, smashing windows and breaking inside,

South Korea’s impeached President Yoon Suk Yeol was formally arrested early on Sunday, days after being apprehended at his presidential compound in Seoul. He faces possible imprisonment over his ill-fated declaration of martial law last month.

South Korea’s impeached President Yoon Suk Yeol attended a court hearing where investigators were seeking to extend his detention, making a surprise appearance after his arrest earlier this week.