JonBenet Ramsey’s brother is demanding $150million from a forensic pathologist who went on TV and accused him of murdering his sister.

The murder of six-year-old JonBenet – who was found dead in the basement of the family’s home in 1996 – remains one of the biggest unsolved mysteries in American crime history.

Last month Dr Werner Spitz was interviewed on CBS’s Detroit affiliate and said he believed her brother Burke, who was nine at the time, had killed her after some sort of confrontation.

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JonBenet (left) was found beaten and strangled on the floor of the family’s cellar several hours after 911 was called but Burke (right) and their parents always denied being involved

JonBenet Ramsey’s brother Burke (pictured) has been criticized for smiling during an interview by Dr Phil about his sister’s death

‘Spitz made this accusation without ever examining JonBenet’s body, without viewing the crime scene, and without consulting with the pathologist who performed the autopsy on JonBenet,’ reads a complaint filed in Wayne County Circuit Court in Detroit by Burke’s attorney, Lin Wood.
Burke Ramsey, who is now 29 and lives in Charlevoix in northern Michigan, is seeking $150million in damages from Dr Spitz.

The lawsuit says Dr Spitz is a publicity seeker ‘with a history of interjecting himself in high profile cases’.

Dr Werner Spitz (pictured) is now being sued by JonBenet Ramsey in a $150million lawsuit

Burke’s attorneys said they demanded a retraction the day after the interview, but Dr Spitz refused.

They said Dr Spitz had ‘a disturbing history of making false statements related to the brutal murder of young girls’ and his testimony had been labelled ‘not useful or credible’ in at least one case.

JonBenet was found dead in the basement of the family’s home in Boulder, Colorado.

In 2008 her parents and brother were cleared by prosecutors who said DNA on the girl’s underwear did not match anyone in the family.

Boulder police said last month the investigation into JonBenet’s slaying remains open.

JonBenet’s parents John and Patsy (pictured) were suspects for years. Patsy died of cancer in 2006, with the case still unsolved

Chief Greg Testa said investigators have collected 1,500 pieces of evidence, including the analysis of 200 DNA samples, traveled to 18 states to interview about 1,000 people and have received, reviewed or investigated more than 20,000 tips, letters or emails.

CBS is airing a six-part television docuseries, The Case of: JonBenet Ramsey, in which investigators are teaming up with new experts to re-examine the evidence using today’s technology and forensics.

In one episode FBI special agent Jim Clement said Burke had a ‘history of scatological problems’ and had smeared feces on the bedroom walls and on one of his sister’s Christmas presents.

Ex-housekeeper Linda Hoffman-Pugh also told she programme she remembered a time when she uncovered ‘fecal material the size of a grapefruit on the sheets’ in JonBenet’s bed.

The murder of JonBenet Ramsey is unsolved 20 years on. Her brother Burke (pictured, left, with his sister) recently gave an interview with Dr Phil

Burke Ramsey was interviewed last month on the TV show Dr Phil.

On it he Dr Phil asked him what he would say to people who think he killed JonBenet and he replied: ‘I don’t know what to say to that, because I know that’s not what happened… Look at the evidence or the lack thereof.’

JonBenet’s body was found in the family’s cellar on December 26, 1996, hours after her mother, Patsy, called 911 and said she was missing and she had found a ransom note.

Suspicions arose about Patsy and husband John because the ransom note was written on paper which belonged to the family and there were no footprints in the snow outside the house.

Mrs Ramsey died of cancer in 2006.

Mail Online contacted Dr Spitz’ office and was told that he did not wish to comment.

TIMELINE OF A TRAGEDY: THE INVESTIGATION OF JONBENET’S DEATH

December 26, 1996: JonBenet Ramsey, 6, is found dead in the basement of the family’s Boulder home, several hours after her mother called 911 to say the girl was missing and that she had found a ransom note. She was killed after she was strangled and suffered a fractured skull

January 1, 1997: Patsy and John Ramsey appear in first TV interview to protest their innocence

April 30, 1997: They undergo formal interviews at the Boulder County Justice Center

May 20, 1997: Mrs Ramsey, who authorities believe could have written the ransom note, gives them a fifth handwriting sample

Summer 1997: The Ramseys move from Colorado to Atlanta

March 12, 1998: Boulder police ask the DA to take the case to a grand jury

June, 1998: Boulder police present the results of their investigation to Hunter’s prosecutorial team and outside advisers; the Ramseys are interviewed separately over three days by investigators

August 12, 1998: Authorities say the Ramsey case will go to a grand jury and the following month, it begins

October 13, 1999: The grand jury disbands and the DA announces there is not enough evidence to file charges against the couple

March 29, 2001: The Ramseys file an $80 million libel and defamation lawsuit against officers at the Boulder Police Department who agree to an undisclosed settlement in the case

March 31, 2003: Federal judge says evidence is ‘more consistent with a theory that an intruder murdered JonBenet than it was with a theory that Mrs. Ramsey did’

December 2003: New DA confirms that DNA from a spot of blood from JonBenet’s underwear has been entered into the FBI’s national database – but it’s not from her family

June 24, 2006: Patsy Ramsey dies in Roswell, Georgia, at age 49, from ovarian cancer

August. 16, 2006: John Mark Karr, a 41-year-old American school teacher who confessed to the crime, is arrested in Bangkok, Thailand – but his DNA does not match that found on the body

July 9, 2008: DA makes public a letter she has written to John Ramsey explaining that new DNA tests have convinced her that no member of the Ramsey family should remain under any suspicion

September 2010: Reports surface that police seek to re-interview JonBenet’s brother Burke, who had been 9 at the time of her death, as they continue to investigate the death

July 21, 2011: John Ramsey remarries to Jan Rousseaux, 53, a designer

June 14, 2012: A. James Kolar, who worked as an investigator in the DA’s Office, writes in a new book that the Ramsey family ‘may have been involved at least as an accessory after the fact’

October 23, 2013: Judge rules that the court will release grand jury indictment about the Ramseys

October 25, 2013: Indictment is released, revealing that in 1999 it accused the Ramseys of two counts each of child abuse resulting in death in connection to the first-degree murder of JonBenet