cameras were operational that night. According to an April 19, 2006, statement made by Twitty, the video cameras at the Holiday Inn were not functioning the night Holloway vanished. Twitty has made other statements indicating that they were working and has stated so in her book. Police Commissioner Jan van der Straaten — the initial head of the investigation until his 2005 retirement — said that Holloway did not have to go through the lobby to return to her room. The search for physical evidence was extensive and subject to occasional false leads; for example, a possible blood sample taken from Deepak Kalpoe's car was tested but determined not to be blood. American law enforcement cooperated substantially with Aruban authorities from the early days of the investigation. U.S. Secretary of State Condoleezza Rice stated to reporters that the United States was in constant contact with Aruban authorities. Another State Department official indicated, "Substantial resources are being applied to this as they [Aruba officials] continue to ask for more." 2005 arrests of multiple suspects On June 5, Aruban police detained Nick John and Abraham Jones, former security guards from the nearby Allegro Hotel (which was then closed for renovation) on suspicion of murder and kidnapping. Authorities have never officially disclosed the reason for their arrests, but, according to news accounts, statements made by Van der Sloot and the Kalpoe brothers may have been a factor in their arrests. Reports also indicated that the two former guards were known for cruising hotels to pick up women, and at least one of them had a prior incident with law enforcement. John and Jones were released on June 13 without being charged. On June 9, Van der Sloot and the Kalpoe brothers were arrested on suspicion of the kidnapping and murder of Holloway. Aruban law allows for investigators to make an arrest based on serious suspicion. In order to continue holding the suspect in custody, an increasing evidential burden must be met at periodic reviews. According to Dompig, the focus of the investigation centered on these three suspects from the "get-go". Dompig stated that close observation of the three men began three days after Holloway was reported missing, and the investigation included surveillance, telephone wiretaps, and even monitoring of their e-mail. Dompig indicated that pressure from Holloway's family caused the police to prematurely stop their surveillance and detain the three suspects. As the investigation