 During police questioning, he admitted to habitually using methamphetamine and marijuana, and smuggling the former substance into Korea.On January 24, 2011, the Seoul High Court sentenced him to four years in prison; upon Kim's appeal, the jail term was reduced to 30 months suspended for four years, along with two years of probation, 120 hours of community service, 40 hours of substance abuse education, and a fine.Kim was released from a prison in Uiwang, Gyeonggi Province on March 25, 2011.