13 foreigners involved in group drugs at entertainment facility...half of them are illegal immigrants = South Korea

In Incheon, South Korea, a group of Vietnamese people were arrested for using drugs at entertainment facilities (bars, clubs, sex shops, etc.), and more than half of them were illegal immigrants.
was discovered through a police investigation. According to the Incheon Gyeyang Police Station, seven of the 13 Vietnamese nationals arrested on the 19th on suspicion of violating the Narcotics Control Act were in the country illegally due to expired visas.
I understand. Police also plan to add charges against these individuals for violating the Immigration Control Act. The incident occurred around 6:20 a.m. on the 19th at a music club in Gyeyang-gu, Incheon. Police should report
They rushed to the scene and discovered 13 Vietnamese men and women. They were separated into two separate rooms and were believed to be using a psychotropic drug called ketamine. Police seized four units of ketamine and
All of them showed positive reactions in the easy reagent test. The Vietnamese nationals arrested were seven male customers and six female employees, all of whom were friends who met in Vietnam. The police examined their hair at the National Forensic Science Department.
We plan to send it to the National Research Institute for a detailed appraisal.