The American suspect in the killing of JonBenet Ramsey told investigators that he drugged and had sex with the 6-year-old beauty queen before accidentally killing her, a senior Thai police officer said Thursday.

An autopsy on Ramsey said a blood screening showed no drugs or alcohol in her body but said she had vaginal abrasions.

Lt. Gen. Suwat Tumrongsiskul, head of Thailand’s immigration police, said by telephone that he was not present for the questioning, which was conducted by U.S. law enforcement officials.

But, according to what the general said he was told of the questioning, the suspect, John Mark Karr, “said he drugged the child.” Suwat did not say who briefed him on the questioning.

Karr claimed he had sex with Ramsey, who was still alive, Suwat said. Karr said he then realized he had “accidentally” killed her, according to the general.

A spokesman for the U.S. Embassy said it had no information about Karr’s alleged actions or what he said to questioners. U.S. and Colorado law enforcement officials were unavailable for comment.

Copyright © 2006 The Associated Press