An additional 60 South Koreans remain detained by Cambodian authorities after a crackdown on scam operations An additional 60 South Koreans remain detained by Cambodian authorities after a crackdown on scam operations South Korea has issued its most serious travel warning for parts of Cambodia, issuing a “code black” ban that orders citizens to leave areas in which the government has identified surging employment scams and detention cases targeting its nationals. The travel prohibition covers