LIMA, Peru (CNN) - Joran van der Sloot could be formally charged as early as Tuesday in the killing of Stephany Flores Ramirez, Peruvian government authorities said.
The government authorities said Van der Sloot confessed to murder late Monday. He will likely be held at one of three maximum security prisons - Castro Castro, Piedras Gordas and Lurigancho, authorities said.
Efforts by CNN to contact van der Sloot's attorney were not immediately successful.
At his first court appearance, the judge may set a hearing date for van der Sloot and could order additional investigations in the case.
The Peruvian justice system often issues a lighter sentence in cases where the suspect confesses. That may have influenced his alleged confession.
Van der Sloot could get up to 35 years in prison. There is no death penalty or life sentence in Peru.
A Peruvian police report leaked Monday said Flores was found in his hotel room on the floor, half-dressed. The report provides new details about the hours before Flores' body was found.
Van der Sloot, who was twice arrested in connection with the disappearance of Alabama teen Natalee Holloway in Aruba in 2005.
According to the document, the Hotel Tac, where van der Sloot was staying, received a call from someone looking for him about 11 p.m. June 1. The receptionist forwarded the call, but no one answered. The hotel worker assumed that van der Sloot was asleep because the room key was with him and not the front desk.
About an hour later, according to the police report, the receptionist noticed that van der Sloot owed money for two nights and went up to his room, where her knocks went unanswered. The television was blaring, so the hotel employee figured he was resting, the report says.
Afterward, the hotel supervisor told the employee to go back to van der Sloot's room and enter using a spare key. When the employee went in, she found Flores' body on the floor, dressed in a black T-shirt and red panties, half-covered with a piece of white clothing, the police report said. Flores was bleeding from her nose, the report said.