Gary Oliva, 54, reportedly confessed to killing JonBenet Ramsey

Vail suspected Oliva was involved with JonBenét’s murder for 22 years and that the written confession is enough proof to have him charged with the crime.

The letters have now been shown to Boulder police.

Police spokesperson Laurie Ogden said: "The Boulder Police Department is aware of and has investigated Mr Olivas’ potential involvement in this case.

"We have passed the additional information you provided on to investigators. We will not comment on any actions or the status of this investigation.”