ORANJESTAD, Aruba (CNN) -- A judge Monday granted the prosecution's request to hold Joran van der Sloot for a total of 16 days "on the suspicion of manslaughter" in the case of Alabama teenager Natalee Holloway.
Joran van der Sloot has denied involvement in Natalee Holloway's disappearance. He faces a judge Monday.
Van der Sloot, 20, was arrested Wednesday in Netherlands and taken back to Aruba, where he is a suspect in the disappearance of 18-year-old Holloway in May 2005.
Two other suspects, brothers Deepak Kalpoe, 24, and Satish Kalpoe, 21, were arrested in Aruba the same day as van der Sloot.
All three were initially arrested in 2005 but released by a judge due to lack of evidence. Watch how the case is heating up
According to a news release from the court, the judge approved the prosecution's request for an eight-day detention, beginning with van der Sloot's arrest last week, and added an additional eight days, to begin when the initial period ends on Thursday.
Prosecutors have until December 7 to determine if they will ask to hold him longer.
A judge in Aruba ruled Friday that authorities could continue to hold the Kalpoes for eight more days.
Van der Sloot was attending college in Netherlands when a Dutch court OK'd his transfer to Aruba, a Dutch territory, to face charges. He was flown Friday to Aruba with a police escort.
Van der Sloot's attorney opposed his client's arrest and the additional custody time, but the judge, during Monday's closed hearing, denied his request to release him, the release from the court said.
Van der Sloot and the Kalpoe brothers were allegedly the last people seen with Holloway after she left a bar in Aruba. View a timeline of the case
They are charged with "involvement in the voluntary manslaughter of Natalee Holloway or causing serious bodily harm to Natalee Holloway, resulting in her death."
All three have maintained their innocence.
Aruba's chief prosecutor said Friday that there is enough evidence to prove Natalee Holloway is dead -- even if the Alabama teenager's remains are never found.
"There's no doubt in my mind that she's dead," said Hans Mos. "I think we have enough evidence to prove the girl is not alive anymore, even without a body."
Mos further explained that Aruban law does not require a body to prove someone is dead "and any day that passes now is just more evidence that she is not alive anymore."
In the recent investigation, advanced techniques were used to re-examine existing information, including cell phone records and text messages exchanged the night Holloway disappeared, Mos said.
Investigators also returned to the homes of the suspects to try to re-create transmissions.
The team also discovered that some existing evidence was improperly analyzed, Mos added.
When she disappeared, Holloway was on vacation with about 100 classmates celebrating their graduation from Mountain Brook High School near Birmingham, Alabama.
Van der Sloot and the Kalpoes were the last people seen with Holloway as she left Carlos'n Charlie's nightclub in Oranjestad, Aruba, about 1:30 a.m. on May 30, 2005. The men have said they had nothing to do with her disappearance. She has not been found.
Holloway's high school group had planned to leave Aruba the next day, and Holloway's packed bags and passport were found in her hotel room after she failed to show up for her flight.
The Kalpoes have told police they dropped Holloway and van der Sloot off near a lighthouse on the northern tip of the island after they left the nightclub.
Van der Sloot's mother, Anita, has said her son told her he was on the beach with Holloway but left her there because she wanted to stay.
She said Friday she had no comment on her son's latest arrest.
Holloway's mother, Beth Holloway, said her ex-husband, Dave Holloway, has hired divers who will use sonar equipment from a benefactor to search for the girl's remains in deep water surrounding the Caribbean island.
Aruba's criminal justice system is based on Dutch law and the Napoleonic code, legal experts say.
In Aruba, authorities can make an arrest if they have reasonable suspicion that someone knows about or is involved in a crime. Magistrates investigate cases, and judges determine a suspect's guilt or innocence. There are no jury trials. E-mail to a friend
CNN's Phil Black, Eric Marrapodi and Kimberly Segal contributed to this report.