"It's just renewed some hopes that the police are going to find answers to this disappearance of our daughter," Dave Holloway told Associated Press Television News.

Van der Sloot's mother, however, insisted her son had not been arrested but was only detained for more questioning.

Holloway, of Mountain Brook, Ala., was last seen leaving a bar with the three men on May 30, 2005, hours before she was scheduled to board a plane home with high school classmates celebrating their graduation on the Dutch Caribbean island. She was 18 at the time.

Hundreds of volunteers, Aruban soldiers, police and FBI agents spread out across the island for the missing teen. Later efforts would include divers, Dutch F-16 jets equipped with search equipment, and specially trained dogs. No trace was ever found of her.

Van der Sloot and the Kalpoe brothers were previously detained on suspicion of taking part in her death, but they denied involvement and a judge released them for lack of evidence.

Van der Sloot, 20, was re-arrested in the Netherlands, where he was attending university. The Kalpoe brothers — Deepak is 24, Satish, 21 — were taken into custody in Aruba.

Authorities "ordered their renewed arrest because further investigation into the disappearance has led to new incriminating evidence," the office said in a statement.

Hans Mos, chief prosecutor in Aruba, declined to discuss the new evidence or any other details about the case.

"Our intention is to keep them in detention for a longer period," he said.

Van der Sloot's mother, Anita, denied her son was arrested and said he was only taken into custody for more questioning. She said he wasn't put in handcuffs.

"What they want to do with Joran is to bring him to Aruba for a final reconstruction," Anita van der Sloot said by telephone from the family's home in Aruba.

She said her family and that of the Kalpoe brothers had also been questioned in recent weeks.

"The questions they asked were so obvious, things like, 'Why did Joran leave his shoes on the beach?'" she said, referring to the place where her son said he kissed Holloway alone before her disappearance. "I think it's ridiculous after two-and-a-half years to be doing this."

The brothers were expected to make an initial appearance in an Aruban court Friday, at which point prosecutors were expected to present the new evidence to a judge. A court date in the island had not yet been set for van der Sloot.

Wim de Bruin, a spokesman for the Dutch national prosecutor's office, said van der Sloot could be sent to Aruba without an extradition hearing and the transfer would occur "within several days."

In April, investigators from the Netherlands dug around the home of van der Sloot's family for two days without revealing what prompted the search. Then in May, Dutch and Aruban investigators visited the home where Deepak and Satish Kalpoe live with their parents for what authorities termed an "inspection," without revealing details.

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Associated Press writers David McFadden and Danica Coto in San Juan, Puerto Rico, and Mike Corder in Amsterdam, Netherlands contributed to this report.