In an unusually speedy manner, the nation\'s spy agency on Wednesday arrested a leftist lawmaker on charges of plotting to overthrow the government, putting it a step closer to launching a prosecution probe into the scandal. The arrest was made shortly after the Suwon District Court, south of Seoul, issued a warrant against Rep. Lee Seok-ki of the minor opposition Unified Progressive Party (UPP). National Intelligence Service (NIS) investigators brought him to court, where he is to undergo a warrant examination Thursday.