Patsy and John Ramsey, parents of USA murder victim JonBenet Ramsey.

L. Lin Wood said the program was filled with “lies, misrepresentations, distortions and omissions”.

JonBenet Ramsey was found dead in her basement on Boxing Day in December 1996. Picture: SnapperSource:Supplied

“I will be filing a lawsuit on behalf of Burke Ramsey,” Wood told Reuters in a telephone interview.

“CBS’ false and unprofessional attacks on this young man are disgusting and revolting.”

The network responded to Wood in a statement to Reuters: “CBS stands by the broadcast and will do so in court.”

JonBenet Ramsey's brother speaks to Dr Phil. Picture: Dr Phil.Source:Supplied

Burke Ramsey was aged only nine when his six-year-old sister JonBenet was found dead in the basement of the family’s Boulder, Colorado, home on December 26, 1996.

Public suspicion immediately focused on the girl’s parents, John and Patsy Ramsey, and Burke.

In 2008, the three were officially cleared by prosecutors who said that DNA found on the girl’s underwear didn’t match anyone in the family.

Burke Ramsey, who’s now 29, said in an interview on Dr. Phil broadcast earlier this month that the crush of attention was “a chaotic nightmare” and turned him into “a very private person.”