Although Flores had cranial injuries , autopsy report unclear . Blood found in the van der Sloot 's hotel room . Autopsy was difficult because Flores ' body was badly decomposed . 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 . Evidence reveals Flores had used amphetamines .
Although Flores had cranial injuries , autopsy report unclear . Blood found in the van der Sloot 's hotel room . Autopsy was difficult because Flores ' body was badly decomposed . Evidence reveals Flores had used amphetamines .