parliamentary system to remove power from the office of the president. Yun Bo-seon was elected President on August 13, 1960, but real power was vested in the prime minister, Chang Myon. A National Assembly investigating committee found that the firing into the crowd by the police had not been intended to disperse the crowds, but rather to kill protesters. It was later revealed at a criminal trial that Park Jong-pyo, the Chief of Public Security who ordered firing against protesters, tied rocks on Kim Ju-yul's dead body and threw him away into the Masan shore to prevent him floating up on the shore. Park was later sentenced to life imprisonment for killing Kim. On May 16, 1961, following months of political instability, General Park Chung-hee launched a coup d'état overthrowing the short-lived Second Republic of South Korea and replacing it with a military junta and later the autocratic Third Republic of South Korea. On July 19, 1965, 90-year-old Rhee died at 19:35 Korean time in Honolulu. See also History of South Korea Polish 1970 protests References Further reading Mark Peterson, 2009, A Brief History Of Korea (Brief History), Facts on File. () External links KBS archive footage of the April protests 1960 in South Korea 20th-century revolutions South Korean democracy movements First Republic of Korea Political history of South Korea Protests in South Korea Student protests in South Korea Second Republic of Korea April 1960 events in Asia Conflicts in 1960