"A medical examination showed Choi had no serious problems and he reacts when people call his name or pinch him," a police official said. "When he was transferred to the hospital, he wasn't taken in a stretcher, but was helped by others."

Police said T.O.P appeared to have overdosed on tranquilizers that he has been taking for medical reasons. He took the pills about 10 p.m. Monday, but couldn't wake up by noon, which apparently caused others to take him to the hospital.

"Choi isn't in critical condition, and he is just sleeping right now since the medication he took contains sleeping pill ingredients," the official said. "Once the effects of the medication weaken after one or two days, he will be fine."

The incident occurred just a day after he was indicted without detention on charges of smoking marijuana. Seoul prosecutors on Wednesday announced that Choi is suspected of smoking the banned substance four times with a 21-year-old would-be singer, only identified by her surname Han, at his home in Seoul in October last year.

Choi has been serving his mandatory military service as a conscripted policeman since February. He had worked at the Gangnam Police Station in Seoul, but was transfered to a different police corps in eastern Seoul following his indictment.

His military service period will be put on hold until a court reaches a verdict. If he receives a jail term of 18 months or more, he will be dishonorably discharged from the service.

All able-bodied Korean men are required to complete at least 21 months of military service before the age of 35 in South Korea.

The use of marijuana is banned in South Korea and can be punished with a maximum of five years in prison or a fine of up to 50 million won ($44,640). (Yonhap)