The Korean Central Intelligence Agency (KCIA) claimed Do Ye-jong (도예종, 都禮鐘), Yang Choon-woo (양춘우, 楊春遇), Park Hyun-chae (박현채) and ten other individuals organized the People's Revolutionary Party.
According to the National Intelligence Service (successor to the KCIA in 1981), this was "an organization attempting to overthrow the Republic of Korea according to North Korean programs"[This quote needs a citation] that "tried to recruit more people from various backgrounds to expand the party structure.
Also, the abduction of Kim Dae-jung, a leading politician of the opposing party added to the anger of South Korean people caused by the Yushin system.
As demonstrations increased against the dictatorship of Park Chung-hee, the KCIA arrested 1024 individuals without warrant, including Do Yejong on April 25, 1974 under the National Security Law.
On April 9, 1975, the Supreme Court of South Korea sentenced to death Do Yejong, Yeo Jeongnam, Kim Yongwon, Lee Subyeong, Ha Jaewan, Seo Dowon, Song Sangjin, and Woo Hongseon.