The skeletal remains of Natalee Holloway were mixed with a dog's in an effort to make it difficult for anyone trying to seek the origin of the remains, a six-part Oxygen series about the missing Alabama teen revealed. The third part of "The Disappearance of Natalee Holloway," which aired Saturday, gave new details about the sting operation — part of Dave Holloway's (Natalee's father) private investigation.

The episode revealed that Natalee's bones along with that of a dog were cremated, and days later the ashes were likely scattered off the coast of Aruba, from where the teenager went missing in 2005.

Natalee was last seen during her vacation in Aruba, a Dutch Carribean island off Venezuela. Three people are believed to have played a part in her disappearance — Dutch man Joran Van der Sloot and two Surinamese brothers, Deepak and Satish Kalpoe.

According to the latest episode, Van der Sloot allegedly had sexual relations with the man who said in the sting operation that he allegedly accepted $1,500 from the former to dig up Natalee’s remains.

The sting operation — recorded in a New Orleans hotel room by private investigator T.J. Ward’s team using hidden cameras and audio — took place in 2016 and was set by Dave and Ward. It was conducted based on an informant named Gabriel, who claimed that Van der Sloot had asked the man to move Natalee’s buried remains in a moment of panic.

“Why would anyone in their crazy mind want to be friends with him? And I found out that they actually became what I understand to be lovers,” Dave says in the episode.

The man said in the video: “Yeah, I was a little obsessed with him. We used to hook up with girls all the time and go out partying and gambling and stuff, and then one night we were having a threesome …. The problem was, the girl finished before us and passed the f----- out, cause we were all drunk as s---.”

“So then he’s like, um, ‘Don’t worry, just turn off the lights, this is how we do it in Europe.’ I’m like, ‘This ain’t no Brokeback Mountain s--- going down.’ He’s like, ‘Just shut up, it’ll all be over soon.’ After that there wasn’t no hesitation. We were all team players after that, getting each other off,” he said.

In the same episode, the man revealed about the alleged $1,500 offer from Van der Sloot to unearth Natalee’s remains. He also mentioned about the exact location of those remains. After unearthing the remains of Natalee and the dog, he turned the ashes over to Van der Sloot, and they were dumped at sea.

Dave's 18-month long private investigation uncovered human skeletal remains at an undisclosed location in Aruba. Currently, the remains are being analyzed to check if it is linked to the case.

After the Holloways felt unsatisfied with the investigation by Aruban authorities they decided to continue the search for the truth themselves. The Aruban authorities officially closed the case in 2008.

"The Disappearance of Natalee Holloway" airs on Saturday 9 p.m. EDT on Oxygen.