Lima , Peru ( CNN ) -- Police said Thursday that they found skin underneath the fingernails of Stephany Flores , whose body was found June 2 in the hotel room in Lima , Peru , of Joran van der Sloot . Miguel Canlla Ore , a colonel in the Peruvian National Police and head of homicide , told journalist Victoria Macchi that the amount of skin was small and that laboratory DNA tests that might indicate its provenance had not been completed . Peruvian authorities have charged the 22-year-old Dutchman with murder in the death of the 21-year-old woman , whom van der Sloot had met while gambling in Lima . He was also the lead suspect in the 2005 disappearance of Alabama teenager Natalee Holloway in Aruba . Van der Sloot was arrested twice in connection with Holloway 's disappearance in Aruba but was never charged because of a lack of evidence . A court document obtained by CNN shows Flores had a cranial fracture and other injuries to her face and neck and showed signs of asphyxiation . Forensic tests in the hotel room where her body was found showed blood on the floors , hallway and mattress , the document said . According to transcripts of van der Sloot 's confession , he said he elbowed Flores in the face before strangling her and then suffocating her with his shirt . The transcripts were provided to CNN by a police source who has not been named because he was not authorized to pass along the material . Van der Sloot told authorities he attacked Flores on May 30 after she read an e-mail in his computer connected with the Holloway case . After killing Flores , police say , van der Sloot took money and bank cards from her wallet and fled to Chile , where he was arrested on June 3 . He was returned the next day to Peru . Van der Sloot is being held in a high-security area of the Miguel Castro Castro Prison , where only two of 10 cells are occupied and he has no contact with the general prison population . CNN 's Lonzo Cook and journalist Nancy Leung contributed to this story .
Police say they have found DNA under Stephany Flores ' fingernails . Amount of tissue was small . Testing was not yet complete on the tissue .