A correctional officer at South Korea’s only private prison is under investigation for allegedly demanding 30 million won (US$20,600) from singer Kim Ho-joong in exchange for helping arrange his transfer to the facility – a claim authorities say is false.The Ministry of Justice said the officer, whose name was not released publicly, could face disciplinary action depending on the result of the investigation.According to the ministry on Sunday, the Seoul Regional Correctional Headquarters is...