Patrick Frater Asia Bureau Chief Leading South Korean actor Yoo Ah-in, star of “Burning,” “The Throne” and Netflix series “Hellbound,” must report to the police on Friday in connection with the alleged use of a variety of drugs. Allegations of Yoo’s drug use emerged a month ago and he has previously spoken with authorities. The Yonhap news agency now specifies that he will be considered as a criminal suspect when he presents himself to the Seoul Metropolitan Police Agency on Friday. It is unclear whether Yoo will be formally arrested at that time. Yoo became a person of interest in early February after the Ministry of Food and Drug Safety revealed that he had bought suspicious quantities of the sedative Propofol in a series of purchases starting in 2021. Propofol is a strong sedative that can also be used as an anesthetic. The authorities have looked into several doctors’ offices and clinics in Seoul that may have administered the drug.