One of those individuals was Katelynn Farris, another one of Kylr's ex-girlfriends.
"He basically opened up to me and told me that they had been dating and that he really did love her and she basically explained to him that she didn't want to be with him anymore, and he said he kind of just freaked out," said Farris. "Things got a little physical and the next thing he knew is she wasn't breathing."
Katelynn has since shared her story with Kara's family, and the authorities. But she's not even the only person making such claims.
Rockwell has a recorded statement she took from one of Kylr Yust's ex-girlfriends, and in her interview she describes what he did to her and also what he did to Kara Kopetsky.
"He's admitted to it to me. He told me he killed her," the ex-girlfriend says on the recording. "He said 'have you ever seen the life leave someone's eyes?' He told me about all the things he did to her before he killed her. Beating her, like listening to her scream for her parents, listening to her cry and beg for her life, and how much he loved it."
If these statements are to be believed, Kylr himself has admitted his guilt. So why isn't he locked up?
"That in and of itself won't get him convicted in a court of law," said Belton Police Lt. Brad Swanson. "Because he could say 'I was just drunk and I was bragging.' Yes, you could probably get a grand jury to indict somebody for saying those things. But if it goes t a court of law and the person were trying to convict gets found not guilty, guess what? I can never try him again. Say I found a body next weekend, evidence that ties that person to the crime and he's been exonerated? That's it, we're done."