Gwangju Police said Monday it has apprehended 12 foreigners, including illegal immigrants, on suspicion of using narcotic substances at a local foreigner-only karaoke, known locally as "noraebang." The suspects, whose identities were withheld, are suspected of taking ketamine inside a noraebang in Usan-dong, Gwangju, according to the Gwangju Metropolitan Police Agency's drug investigations unit. The ma...