18-year-old Alyssa Bustamante, who pleaded guilty to second-degree murder, was sentenced to life in jail with the possibility of parole.
In October 2009, the then 15-year-old Bustamante killed 9-year-old Elizabeth Olten in St. Martins, Missouri, by stabbing Olten in the chest and slicing her throat.
Bustamante had been charged with first-degree murder, but avoided a trial and the possibility of life in prison with no chance of parole by pleading guilty to second-degree murder.
Missouri State Highway Patrol Sgt. David Rice testified that Bustamante told him "she wanted to know what it felt like" to kill someone. Prosecutors used diary entries in which Bustamante described the murder.
Bustamante wrote in her diary: "I strangled them and slit their throat and stabbed them now they're dead. I don't know how to feel atm. It was 'ahmazing.' As soon as you get over the 'ohmygawd I can't do this' feeling, it's pretty enjoyable. I'm kinda nervous and shaky though right now. Kay, I gotta go to church now...lol."
Bustamante, later, led police to a grave where she had hid the body under some leaves in the woods.