SAN JUAN, Puerto Rico (AP) — Aruban authorities reportedly have a new witness in the disappearance of Alabama teen Natalee Holloway and plan to conduct another search for her body on the Dutch Caribbean island.

The witness provided specific information that prompted investigators to organize a search in sand dunes along the northern tip of the island, said Gerald Dompig, Aruba's deputy chief of police, in an interview with CBS television's "48 Hours Mystery" program.

Dompig said investigators will use cadaver dogs to search near a lighthouse and believe that someone took steps to carefully hide Holloway's body -- perhaps burying her twice.

The witness "wanted to talk about the fact that he knew more about the whereabouts of Natalee," Dompig said, according to a partial transcript of the interview, scheduled for broadcast on Saturday.

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"The information that this person gave was too specific to just be a story that was just made up by someone."

Aruban authorities declined to comment on the report Wednesday.

Holloway's mother, Beth Twitty of Mountain Brook, Alabama, said she's aware of the program, but had "no idea" how it would be presented.

"I'm just waiting to see it Saturday night," Twitty said.

Holloway, 18, was last seen leaving a bar with Dutch national Joran van der Sloot and Surinamese brothers Deepak and Satish Kalpoe. No one has been charged in her disappearance and the investigation has produced a number of false leads.

In January, Aruban investigators searched sand dunes on the northwest coast of the island with more than 50 officers. At the time, Dompig said police had considered the dunes a place of interest since the investigation began and had searched them before.