On the day after Christmas in 1996, John and Patsy Ramsey woke up to discover their 6-year-old daughter, JonBenét, a child beauty queen, was missing from the family's Boulder, Colorado, home.

A handwritten ransom note demanding $118,000 — John's exact bonus that year — was found on the stairs by the kitchen. Seven hours later, John discovered his daughter's lifeless body in a small room in the basement.

For decades, the case has captivated the nation.

Now, 28 years later, John Ramsey remains hopeful that his daughter's killer will be caught. He believes new DNA technology could aid police in re-investigating JonBenét's murder, a case that drew global attention.

JonBenet's autopsy determined she had been sexually assaulted and strangled, and her skull was fractured. Unknown DNA was found under her fingernails and in her underwear.

The Ramseys quickly became suspects, even though no evidence connected them to the crime.

The Ramseys have consistently claimed they were not involved in JonBenet's murder. However, the Boulder District Attorney's Office took 12 years to fully exonerate the Ramseys and their son, Burke.

As the weeks passed without any arrests in the case, a media frenzy began to build, fueled by nonstop tabloid images of JonBenét competing in beauty pageants.

A number of suspects surfaced, including a man named John Mark Karr, who confessed to the killing in 2006. However, his DNA did not match the evidence, so he was never charged. The case remained open.

You can read more in the ABC News web site at: https://abcnews.go.com/US/jonbent-ramseys-father-advances-dna-technology-police-solve/story?id=116129328