The level of drug use exceeded what was initially expected. When Yoo Ah-in was arrested in February on suspicion of illegally abusing ipecac, he tested positive for marijuana in his urine. Later, his hair was collected and sent to the National Institute of Scientific Investigation for more advanced testing, where it was discovered that in addition to the above two drugs, he had also tested positive for cocaine and ketamine.
The police are reportedly looking into whether or not Yoo Ah-in makes regular use of ketamine. A search of the hospital’s medication records revealed that he did have a history of using the prescription drug. They plan to question Yoo Ah-in next week as a suspect in the case.
In 2021, he gave milk shots 73 times with a total injection volume of up to 4,400 ml. In 2022, he gave about 30 times, far more than South Korea’s regulation “1 month recommended not to inject more than one time,” according to the investigation results released on February 27.
Cocaine, methamphetamine (commonly known as methamphetamine), and heroin are reported to be the three most frequently used drugs; ketamine (widely known as ketamine), originally a neuroleptic drug, is commonly abused in sex crimes, also known as rape drugs, and was designated as a drug in South Korea in 2006.