A 17-year-old Aruban must remain in custody as authorities investigate the disappearance of Natalee Holloway, an appeals court announced Thursday.
The court also found that there is not enough evidence to detain two brothers from Surinam in Holloway's disappearance.
At a closed hearing Tuesday, a judge heard the appeals from a defense lawyer seeking the release of Joran van der Sloot, and from prosecutors asking for the re-arrest of the Surinamese brothers, Satish and Deepak Kalpoe.
Van der Sloot and the Kalpoe brothers were among the last people to see Holloway, 18, of Mountain Brook, Ala., before she vanished on the final night of her high school graduation trip to the Dutch Caribbean island. Another court ordered the release of the brothers on July 4.
Van der Sloot, the son of a judge in training on the island, has been in custody since June 9, when he was arrested along with the brothers. He has not been charged.
Holloway vanished in the early hours of May 30, just before she was to catch a flight home from a five-day vacation celebrating her high school graduation with 124 classmates.
Extensive searches of the island and surrounding waters by authorities and volunteers have turned up no trace of the young woman.