Police in South Korea apprehended seven Vietnamese nationals suspected of drug use, along with their seven compatriots who were determined to be unauthorized immigrants, during a raid on a Vietnamese club southwest of Seoul on Monday.
The first seven Vietnamese were put under emergency arrest after testing positive for ecstasy and other banned substances in a crackdown that began at 1:00 am on a Vietnamese-only club in Siheung City, 26 kilometers southwest of Seoul, Yonhap News Agency quoted the Gyeonggi Siheung police station.
They are suspected of taking drugs between late Sunday night and early Monday morning.
Police raided the club after receiving a tip-off and conducted urine tests on 127 people, including club customers and employees.
Officers said they would determine whether to seek an arrest warrant for the suspects after further investigation.
The crackdown also led to the detention of seven other Vietnamese who tested negative for drug use but were found to be illegal immigrants.
In early May, eight Vietnamese and two South Koreans were apprehended at the same club for suspected drug use.