[1] On the night of 26 October 1979, President Park Chung Hee was assassinated by Kim Jae-gyu, the director of the Korean Central Intelligence Agency (KCIA) and his own security chief.
[1] Immediately after his death became public, Choi Kyu-hah, then Prime Minister, became acting president under Article 48 of the Yushin Constitution.
The National Conference for Unification nominated Choi Kyu-hah, then Prime Minister, to succeed Park and he became South Korea's fourth president after the election on 6 December.
Universities were closed, political activities were banned, and the press was curtailed while troops were dispatched to cities all over the country to enforce the martial law.
He violently suppressed the protest by sending in military forces with estimates of the death toll ranging between 600 and 3500 victims, effectively bringing an end to the Seoul Spring.