A DNA sample from John Mark Karr, the key suspect in the notorious murder of six-year old JonBenet Ramsey, does not correspond with DNA traces found at the crime scene, a local television station reported. Denver's KUSA cited two unnamed sources for the report, which if confirmed would call into question Karr's claim to have committed the 1996 murder of the young beauty queen.
US authorities have yet to comment on the television report.
Karr, 41, was arrested in Thailand on August 16 on a California warrant over charges of possessing child pornography.
He reportedly confessed to Thai police that he had murdered the child almost ten years ago in a lurid crime case that transfixed much of the country for years.
At his extradition hearing last week in California, a judge advised Karr that he faced charges of first-degree felony murder, kidnapping and sexual assault on a child in Colorado.
Karr was transferred from California to the western state of Colorado last week.
