Key dates in the JonBenet Ramsey case:
Dec. 26: JonBenet Ramsey, 6, is found dead in the basement of her Boulder, Colo., home. Patsy Ramsey says she found a ransom note demanding $118,000 for her daughter.
Dec. 31: Ramsey family hires attorney, publicist and investigators.
Feb. 24: Ramsey spokesman says family members know they are "at the top of the list of possible suspects."
April 18: District Attorney Alex Hunter says Ramseys are under an "umbrella of suspicion."
April 30: Ramseys interviewed by police in first formal sessions.
May 14: Two detectives, including the first to arrive at the Ramsey home, are removed from the case.
Oct. 10: Police Chief Tom Koby admits mistakes made early in the case.
June 23-25: Ramseys are questioned by police, their first interviews in more than a year. JonBenet's brother Burke, 9 at the time of her death, is interviewed for six hours.
Sept. 15: Grand jury begins investigation.
Oct. 13: District attorney says no indictments will be issued, cites a lack of sufficient evidence.
Dec. 20: New District Attorney Mary Keenan (now Mary Lacy) takes over investigation and promises a fresh look.
March 31: A federal judge in Atlanta concludes that the weight of the evidence is more consistent with the intruder theory than with the theory that Patsy Ramsey killed JonBenet.
April 7: Lacy issues a statement agreeing with the judge.
June: Retired detective Tom Bennett is hired by the Boulder district attorney's office to lead a refocused investigation.
June 4: The Ramseys' attorney says DNA found in JonBenet's underwear did not match any samples in an FBI database of convicted violent offenders.
June 24: Patsy Ramsey dies at 49 following a long battle with ovarian cancer.
Aug. 16: John Mark Karr is arrested in Thailand.
Aug. 27: Boulder prosecutors say they will not pursue charges against John Mark Karr.