Joran van der Sloot shown in hidden camera footage where he says he asked friend to dispose of Natalee Holloway's body.
A hidden-camera interview with a Dutch student saying he believed missing teenager Natalee Holloway was dead and asking a friend to dump her body at sea is admissible in court, the chief Aruban prosecutor said Monday.
The courts in Aruba will likely accept the tape as evidence because it was recorded by a private citizen without any influence by authorities, Chief Prosecutor Hans Mos told reporters.
"I take it very seriously," Mos said of the video.
The tape, which was first broadcast Sunday on Dutch television, has appeared to spur the investigation: Mos said authorities in the Netherlands searched two homes Monday where van der Sloot has lived while attending college there.
The prosecutor declined to provide any details about the searches.
A judge in Aruba denied a prosecution arrest to detain Van der Sloot based on the new information. Mos said they will file an appeal Tuesday and expect a decision within a week.
In the secret recordings broadcast, Van der Sloot said Holloway, 18, was drunk and that she began shaking and slumped down on the beach as they were kissing in May 2005.
"Suddenly she started shaking and then she didn't say anything," Van der Sloot said in Dutch, adding that he did not kill her. "I would never murder a girl."
He said he panicked and tried but failed to revive her. He said that Holloway looked dead but that he could not be sure she was not still alive when a friend took her away.
Mos said prosecutors believe Van der Sloot was telling the truth in the video because he seemed to struggle as he told the story and repeated it several times.
"Now, whether that is the truth, that has to be seen ..." he said. "Finally the court will have to decide whether this is a declaration ... that we can use as evidence in this court of law."
Joseph Tacopina, a lawyer for student Joran Van der Sloot, said his client was not responsible for the Alabama teenager's death and that the tapes do not amount to a confession.
"There was no confession, no admission of a crime by Joran on any of these tapes, which is very telling," Tacopina said on ABC's "Good Morning America."
Last week, Van der Sloot said he was lying in those conversations and denied that he had anything to do with Holloway's disappearance. In the secret footage, Van der Sloot spoke with a man he believed to be his friend, who gave him "drugs, marijuana, things like that," Tacopina told ABC.
But Natalee's mother, Beth Twitty, told ABC: "I don't think any of us are surprised by his reaction (that his comments were fiction), but I know one thing. Once people see the video of Joran there are no more questions. There is no one who can walk away from this believing that he is innocent."
She said Van der Sloot didn't even know if her daughter was alive or not.
"Natalee never even had the chance for a medical doctor or a coroner, anyone, to determine (if she was alive)," Twitty said.
Holloway, of Mountain Brook, Alabama, was last seen leaving a bar with Van der Sloot and two Surinamese brothers hours before she was due to board a flight home.
The three were arrested shortly after her disappearance and again in November, but released for lack of evidence. Prosecutors then dismissed their case against them, saying they lacked evidence even to prove a crime. All three have always denied any role in her disappearance.