A lawyer for JonBenet Ramsey's family is planning to sue CBS over claims made in the recent documentary about the 1996 murder case.

In CBS' two-part special The Case Of: JonBenet Ramsey, investigators theorized that the 6-year-old pageant queen was killed by her then 9-year-old brother Burke when he struck her on the head with a heavy object.

"I will be filing a lawsuit on behalf of Burke Ramsey," L. Lin Wood, the Ramsey family's attorney, told Reuters. "CBS' false and unprofessional attacks on this young man are disgusting and revolting."

Watch the eerie trailer for The Case Of: JonBenet Ramsey

Earlier this month, Burke, now 29, sat down with Dr. Phil for his first-ever media interview. In the three-part special, Burke addressed the rumors he killed his younger sister, who was found dead in the family's basement on Christmas Day.

"Look at the evidence, or lack thereof," said Burke, who was previously cleared through DNA evidence. "There's been a few people that said that's not even physically possible for a 9-year-old to do that."

In response to Wood's proposed lawsuit, the network states that "CBS stands by the broadcast and will do so in court."

(Full disclosure: TVGuide.com is owned by CBS.)