A day after prosecutors cleared Jon Benet Ramsey’s father, brother and deceased mother in her killing, the 6-year-old girl’s family hopes that the killer will be eventually caught and brought to justice, the little girl’s aunt said Thursday.

Pam Paugh, Patsy Ramsey's sister, said on CBS' "The Early Show" that the Ramseys do not have their killer yet and she described his finding as the family’s “final goal.”

“That’s the goal that we're still striving toward, and we won't stop until we get there," she said Thursday.

So far, prosecutors are sure of only one thing - they have the killer’s DNA profile extracted from a few invisible skin cells. However, finding the man who did it may prove very difficult. Investigators will have to search for a match in a national DNA database which is growing and has currently reached 5 million offenders' profiles. If the killer has no criminal record and has never been DNA-typed the investigator’s task will be very tricky.

“This murderer is going to be on our streets," said Larry Pozner, a Denver attorney and a past president of the National Association of Criminal Defense Lawyers, about that prospect.

Boulder County (Colo.) District Attorney Mary Lacy issued a letter and sent it to the Ramseys to notify them that the new DNA testing techniques had proved irrefutably that an unknown male unconnected to the family strangled JonBenet in her home.

According to criminal profiler Clint Van Zandt, who spoke with Today’s Natalie Morales in a separate interview, investigators only have unidentified DNA that was found on child’s underwear, but they don’t know how it got there.