The 22-year-old Dutchman is waiting for a judge's decision on his request that his confession to Peruvian authorities in the slaying of 21-year-old Stephany Flores be set aside as coerced, CNN reported Tuesday. Van der Sloot told authorities in Chile, where he was apprehended, that intruders were responsible for Flores' death.
A judge is expected to issue a ruling Wednesday on whether van der Sloot should remain in custody.
CNN said it had obtained a court document showing Flores suffered a cranial fracture and other significant injuries to her face and neck. She also showed signs of asphyxiation, CNN said.
The document said forensic tests in the Lima hotel room where her body was found last month indicated there was blood on the floors, hallway and mattress.
The autopsy also revealed she had used amphetamines, CNN said.
Van der Sloot is charged with murder in Flores' death and he is suspected in the 2005 disappearance of Alabama teenager Natalee Holloway in Aruba, though he has not been charged in that case.