Joran van der Sloot has pleaded guilty in Peru on charges that he killed Stephany Flores in a Lima hotel room in 2010.
Flores, who was a 21-year-old Peruvian business student at the time of her death, was found in his hotel room after the two met at a casino.
Van der Sloot is also the lone suspect in the disappearance several years earlier of Natalee Holloway in Aruba.
Flores' body was found on June 2, 2010, and van der Sloot was soon arrested, having crossed the border into Chile. Prosecutors say he tried to cover up the crime while stealing Flores' bank cards and cash.
Van der Sloot admitted to killing Flores in a videotaped confession. He said he flew into a rage and broke Flores' neck when she allegedly used his laptop to research his role in the Holloway case.
His defense attorney Jose Luis Jimenez, says his client was in a fragile mental state from years of being labeled a killer in the international press. Jimenez hopes to reduce the charges from first-degree homicide to manslaughter.