Holloway's disappearance was first discovered by her classmates, who were in Aruba celebrating their graduation from Mountain Brook High School, when she did not arrive at the airport for her return flight. Holloway was last known to have been seen outside of Carlos'n Charlie's, a local restaurant, with Joran van der Sloot and brothers Deepak and Satish Kalpoe, but the three men denied knowing what happened to her, stating that they had dropped Holloway off at a Holiday Inn where she was staying. Van der Sloot was arrested twice on suspicion of involvement in her disappearance and the Kalpoes were also arrested three times each, and each was released each time due to lack of evidence.
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On January 31st, 2008 the Dutch crime-reporter Peter R. de Vries claimed to have solved the case. See http://www.peterrdevries.com/.