Karr claims he drugged JonBenet and then had sex with the child, but an autopsy said a blood screening showed no drugs or alcohol in the child’s body. Also, while Karr reportedly claims to have sexually assaulted JonBenet, no semen was found on her body. However, the little girl did have small vaginal abrasions.

Karr’s ex-wife, Lara Karr, who divorced him in 2001, told KGO-TV in San Francisco that during the 1996 Christmas season, when JonBenet Ramsey was strangled and beaten to death in Colorado, she and her then-husband were living in Alabama – and that she was with him the entire season.

A Thai police official said Karr told Thai interrogators that he picked up JonBenet at her school and brought her to the basement the day she was killed, Dec. 26, 1996, the day after Christmas – a highly unlikely scenario.

DNA was found beneath JonBenet’s fingernails and inside her underwear, but Wood said two years ago that detectives were unable to match it to anyone in an FBI database. It was not known whether investigators had any DNA evidence against Karr, despite serving time in a California jail in 2001 on child pornography charges.

CBS News 48 Hours correspondent Erin Moriarty reports that investigators may have arrested Karr this week not because they had definitive evidence linking him to the Ramsey murder, but because they feared he might hurt a child in Thailand.

Questions Raised Over JonBenet Confession – topix.net