A new tip in the Natalee Holloway investigation has led to the discovery of human remains in Aruba, 12 years after the teenager disappeared while vacationing on the tropical island to celebrate her high school graduation.

A former roommate of Joran van der Sloot's best friend told Natalee's father Dave Holloway that the young woman was buried in a park near her hotel on the island.

That man, Gabriel, said van der Sloot disposed of the body with help from his father Paulus after Natalee choked to death on her own vomit soon after she was given a drink that had been spiked with GHB.

Van der Sloot revealed this to his best friend John, who then repeated the information to Gabriel while the two were living together over a decade ago.

Dave announced on Wednesday while appearing on Today that he followed up on that tip, and soon after remains were found.

Those remains are now undergoing DNA testing and results should be back in the next month, which could finally lead to some closure for the family of the missing Alabama teenager.

This will all be part of 'The Disappearance of Natalee Holloway,' a docuseries premiering this Saturday at 7pm on Oxygen and ending right around the time the results come back from that DNA test.

Scroll down for videos

Case closed?: A new tip in the 2005 disappearance of Natalee Holloway (above in 2005) has led to the discovery of human remains in Aruba

Public suspect: The tip in the case came from a man named Gabriel, who lived with Joran ven der Sloot's best friend John (van der Sloot above in 2010 after being arrested for the murder of Stephany Flores)

Van der Sloot revealed the details to his best friend John, who then repeated the information to the tipster Gabriel while the two were living together over a decade ago (Natalee's hotel and last known location in Aruba)

'We did an 18-month undercover investigation with an informant who was friends with an individual who had personal knowledge from Joran van der Sloot,' said Dave.

'And had information that took us to a spot where remains were found. And we took those remains and had those remains tested. And they just returned last week they are human remains.'

Dave said he is being careful however to not rush to any conclusions.

'Throughout this process, over the last 12 years, Matt, we had a number of disappointments. I put up a wall, trying to find something that is not going to disappointment,' Dave told Matt Lauer.

'And when we determined these remains were human, I was shocked. And I know that there's a possibility this could be someone else. And I'm just trying to wait and see.'

If they are Natalee's remains, Dave said he will be happy that the mystery has finally come to 'an end.'

He also said in the interview that he did not initially share any information about his investigation with family members, not wanting them to be disappointed again after so many false leads.

Closure: Gabriel (above) claims van der Sloot told John that he gave a drink spiked with the date rape drug GHB to Natalee, 18, who choked on her own vomit

Keeping calm: Dave (above on Today) said he is not getting up his hopes ahead of the DNA results

In a clip from the upcoming series, Gabriel gives Dave a play-by-play account of what allegedly happened that night, saying that van der Sloot had asked the bartender for two drinks and to 'fix it good.'

Those drinks were laced with the date rape drug GHB according to Gabriel, and soon after van der Sloot gave one to Natalee she allegedly began 'foaming at the mouth.'

Van der Sloot, who has never been charged with the murder or disappearance of Natalee, has admitted to giving her a drink that night.

'He panicked, he didn't put her on her side or nothing, and she choked on her vomit,' claims Gabriel.

Van der Sloot did not say anything according to Gabriel because of the GHB, claiming he was giving the date rape drug to 'all the girls' and was afraid of getting in trouble with the police.

Gabriel said that instead, van der Sloot called his father Paulus, who allegedly arrived on the scene and got 'pissed' when he saw that the young woman was dead.

'And he says [to his son], "OK, wait here," and he goes back to the house and gets a burlap,' says Gabriel of Paulus' next move.

'He comes back and says, "OK, she doesn't fit here." So he stomps on her legs and cracks her legs and puts her in the burlap and folds her over.'

At that point Dave asks Gabriel to confirm that this was Paulus doing this, to which he responds: 'Yes.'

Paulus van der Sloot was also never charged with the murder or disappearance of Natalee, and passed away in 2010 after going into cardiac arrest while playing tennis.

'So they grab her and put her in the back of [Paulus'] car and they drive her to a park. Amd they pick a spot, puts her in, covers her up and his dad goes, "grab that cactus, that will just cover everything up,'' continues Gabriel.

'And his dad goes, "Don't you tell nobody. Nobody." But he told John.'

Dave has said in the past that when he met Paulus the man told him that he had to do everything he could to protect his son and would not cooperate with any investigation.

Van der Sloot is serving a 28-year sentence in Peru after being convicted of killing 21-year-old student Stephany Flores Ramírez in 2010, five years to the day of Holloway's death.

He is set to be extradited to the U.S. after completing his sentence in 2038 to face charges he tried to extort money from Holloway's family.

More charges: Van der Sloot is facing extortion charges in the US for allegedly promising to show Beth Holloway (above), Natalee's mother, where the body of her daughter was buried for $25K

Tragedy: Natalee was just 18 when she went missing on the tropical island and has never been found

Beth Holloway, Natalee's mother, alleges that van der Sloot told her he would reveal where her daughter's body was located for $25,000 in cash.

Van der Sloot married Peruvian Leidy Figueroa in July of 2010.

A month later, authorities sent him to the infamous Challapalca prison located high in the Andes when he threatened to kill the warden of the lockup he was being held in near Lima.

Figueroa spoke for the first time soon after that in an exclusive interview with DailyMail.com, insisting that van der Sloot is 'gentle, sensitive, kind' and 'no monster.'

She also insisted that her husband had changed since they started an unlikely prison romance four years ago, saying he was a 'different man' after finding God and had been 'seeking forgiveness' for the evil he committed in the past.

Figueroa did not reveal what 'evil' was she was referring to at the time.

In September of that year she gave birth to the couple's first child, a baby girl.

They named the baby Dushy after van der Sloot's grandmother.

A few month after that van der Sloot was stabbed in prison according to Figueroa, though a warden later claimed that this was untrue.