BOULDER, Colo. (KDVR) — There are hundreds of unsolved homicide cases, long-term missing person cases, and unidentified remains cases in Colorado where at least three years have passed since the crime happened.

The Colorado cold case task force created a list of those cases dating back to 1970. The Problem Solvers are working to highlight cold cases in our state.

Who killed JonBenét Ramsey?

It has been 25 years since JonBenét Ramsey was found dead. Her murder is considered by many to be one of the most notorious cold cases.

The 6-year-old was found dead in the basement of her Boulder home on Dec. 26, 1996 after her family reportedly found a ransom note inside the home. An autopsy revealed Ramsey was strangled to death.

As of Dec. 2021, the Boulder Police Department said they processed more than 1,500 pieces of evidence related to the murder of Ramsey.

At that time, the Boulder Police Department said “it was actively reviewing genetic DNA testing processes to see if those can be applied to this case moving forward.” BPD said nearly 1,000 DNA samples have been analyzed.

In 2019, Burke Ramsey, the brother of JonBenét, reached an undisclosed settlement in a $750 million lawsuit against CBS. The lawsuit said that Burke Ramsey’s reputation was ruined after a television series suggested he killed JonBenét.

In 2008, then-Boulder County District Attorney Mary Lacy wrote a letter to John Ramsey, JonBenét’s dad, saying new DNA evidence had cleared him, his wife and son. She formally apologized for the cloud of suspicion the Ramsey’s lived under for years.

“We believe at this point it is unlikely there will ever be a prosecution,” Boulder police said in 2008

Ramsey’s mom, Patsy, died of ovarian cancer in 2006.

Anyone with information related to this investigation is asked to contact the BPD tip line at 303-441-1974, send an email to BouldersMostWanted@bouldercolorado.gov , or contact Northern Colorado Crime Stoppers at 1-800-222-8477 or www.nococrimestoppers.com.

The National Missing and Unidentified Persons System shows there are currently 21,556 open missing persons cases in the United States and over 300 in Colorado.