Thousands of South Koreans rallied in Seoul Saturday, demanding the resignation of President Park Geun-hye.

Police estimated that around 12,000 demonstrators attended the evening protest, according to the country's semi-official Yonhap news agency.

South Korea's president faces scrutiny for allegedly leaking state documents to a friend.

On Friday, Park Geun-hye ordered the resignation of 10 of her senior secretaries as political turmoil continued to grip the country.

"The President will carry out reshuffling the Office of the President in the near future," her spokesman Jung Youn-kuk told CNN.

Senior secretaries are essentially aides who coordinate policy between the presidency and government ministries.

Those ordered to resign include the senior secretaries to the president for policy coordination, political affairs, civil affairs, foreign affairs and national security, public relations, economic affairs, future strategy, education and culture, employment and welfare and personnel affairs, according to the presidential office's website.

Scandal this week gripped President Park, after she was accused of leaking official state documents to a friend.

(CNN)