Van der Sloot's attorney, Maximo Altez, said his client is willing to plead guilty to the May 30 killing of Stephany Flores, but will plead "violent emotion," the AP reported.
Altez said van der Sloot became enraged and killed Flores because she had used his laptop to look up information on the Holloway case, according to the AP.
"I did not want to do it," van der Sloot allegedly told police, according to a Peruvian newspaper report published shortly after his arrest. "The girl intruded into my private life. ... We argued, and she tried to escape. I grabbed her by the neck, and I hit her."
Last week, prosecutors in Peru said there is sufficient evidence in Flores' slaying to keep van der Sloot behind bars until 2040. If van der Sloot's plea is accepted, he would face three to five years in prison.
Investigators believe Flores was killed on May 30, 2010 -- exactly five years after Holloway disappeared. The Alabama teen's body has never been found, and van der Sloot has never been charged in her disappearance. He was indicted in the U.S. on charges that he extorted $25,000 from the young woman's parents. Prosecutors said that in exchange for the money, he promised to reveal how Holloway died and the location of her body.