Actor Yoo Ah-In (Uhm Hong-sik, 37) has tested positive for cocaine in hair tests.

According to a TV Chosun 'News 9' report, the actor has been confirmed to have abused ketamine and cocaine in addition to marijuana and propofol. Results of analysis of his hair tests during a detailed examination by the National Institute of Scientific Investigation (NISI) revealed that two types of drugs on top of the propofol and marijuana were detected.

In particular, cocaine (coke) causes strong hallucinations and is highly addictive making it one of the three major drugs alongside meth and heroine. Ketamine, which is used as a general anesthetic, was also classified as a narcotic in 2006 due to concerns over misuse and abuse.

Simple urine tests previously conducted by police on Yoo Ah-in who had returned through Incheon Airport on the 5th also came back positive for marijuana. Such tests generally identify drugs abused during a short period of time compared to hair tests that are more accurate and can identify drugs administered for up to one year.

Meanwhile, police have secured records of ketamine prescriptions through a search and seizure at the hospital and are investigating whether Yoo Ah-in habitually abused the drug. Police plan to summon Yoo Ah-in as early as next week to investigate how he took the drugs.

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