By Hyunsu Yim and Jack Kim SEOUL (Reuters) -South Korean police raided the office of President Yoon Suk Yeol, a presidential security official said on Wednesday, in a widening investigation into the embattled leader's failed attempt to impose martial law.

South Korean President Yoon survived an impeachment motion after members of his party boycotted the vote. Yoon attempted to impose martial law earlier this week, sparking backlash.

South Korea’s president said he’s “very sorry” for causing public anxiety and inconvenience with his declaration of martial law earlier this week, and promised not to make another attempt to impose it.