Prosecutors on Monday sought a 20-year prison term for lawmaker Lee Seok-ki of the hard-left United Progressive Party, who stands accused of plotting to sabotage key installations of the country should war break out with North Korea.
Prosecutors also sought to ban Lee from exercising his political rights for 10 years after his release from prison.
The lawmaker allegedly held secret meetings with around 100 other members of the UPP where they planned to blow up key infrastructure in South Korea like communication lines and railways.
Prosecutors are seeking 10- to 15-year prison terms for other key members of the alleged cell. The court will announce its ruling on Feb. 17.
Prosecutors said Lee and his associates deserve lengthy prison terms since they ordered other members of the cell to "prepare for riots and military warfare by abusing his status" as a lawmaker. They added, "The only way to prevent the recurrence of North Korean-style socialist revolution is to put Lee behind bars for a long time."
In his final testimony, Lee said he and his fellow lawmakers were "sacrificial lambs" targeted by those in power.