A total of 23 left-wing political party members have been indicted on charges of impeding the nation's intelligence agency from detaining a lawmaker accused of plotting to overthrow the government, prosecutors said Thursday. The suspects allegedly blocked and physically assaulted National Intelligence Service (NIS) agents who came to arrest Rep. Lee Seok-ki of the Unified Progressive Party (UPP) at the National Assembly building on Sept. 4, they said.