I have read that Joran van der Sloot has confessed to the murder of Stephany Flores Ramirez.
From the link:
LIMA, Peru - A high-ranking Peruvian government official confirmed to NBC News Monday night that Joran van der Sloot confessed to the slaying of a 21-year-old Lima woman.
According to La Republica newspaper, he said that his anger exploded and he broke Stephany Flores' neck after she grabbed his laptop without his permission, and found out that he was involved in the disappearance of an American woman.
The paper quoted Van der Sloot as saying, "I did not want to do it. The girl intruded into my private life."
Another link says that Joran went out for coffee, and returned to find Stephany using his computer.
"The girl saw private things. She had no right. I approached her and she was scared," he continued. "We discussed it and she tried to escape, and I took her neck and hit her."
I wonder if this confession is any more reliable than the four of five he gave after Natalee's death.