The bone fragments found in the Natalee Holloway case could match the DNA of any one of the four missing people who disappeared in or near Aruba. Holloway went missing during her vacation in Aruba, a Dutch Carribean island off Venezuela, on May 30, 2005.

The investigation into Holloway's disappearance new human remains, which her parents hoped belonged to their daughter, but a subsequent forensic analysis proved they were not a match. Holloway’s father and his private detective had uncovered human bone fragments in Aruba as part of the investigation that was chronicled on Oxygen's "The Disappearance of Natalee Holloway."

One of the four bone samples recovered in Aruba was that of human, and Dr. Jason Kolowski, a forensic scientist, said the human bone fragments belong to a single individual. “They are human, and they are of Caucasian, European descent,” he told Oxygen.com earlier this month.

"We don't know if the person is male or female," Dr. Kolowski told Oxygen.com. "We don't know how old that person is. We don't know how long that person has been dead."

The primary suspect is still Joran van der Sloot, a Dutch man who remains behind bars in Peru for the murder of another young woman.

Last week, the sister of another missing woman Robyn Gardner said she’s determined to find if the remains matched her sister's. “I am going to submit my DNA in the next few days to see if there is a match,” Danielle Colson-Unglesbee told HuffPost.

Here are four other people who have disappeared in or near Aruba, whose DNA samples could match that of the bone fragment discovered, according to Oxygen.com.

1. Amy Lynn Bradley: The Petersburg, Virginia-born went missing on a family Caribbean vacation after visiting the island of Aruba in March 1998. Bradley — a white female with short brown hair, green eyes, and has four identifying tattoos — was 24 when she went missing. The FBI offered a reward of $25,000 for information that provides clues into her disappearance. The search for Bradley continues.

2. Robyn Gardner: The Maryland native went missing in August 2011 at a resort in Oranjestad, Aruba. The 35-year-old told her boyfriend she was headed to Florida with her parents, but instead, went to the Caribbean with a 50-year-old man named Gary Giordano. Two days into their trip, Giordano told police Gardner was swept away by a strong current. Gardner is a white female with blonde hair, 5-foot and 5-inches tall, and weighing 130 pounds. Gardner is now presumed dead.

3. Gary Makings: The 59-year-old went missing while vacationing in Aruba in 2002. He was staying in a luxury villa and left to go snorkeling in Boca Catalina and never returned to his apartment. Currently, the families are trying to find answers about Makings whereabouts while the official search has concluded.

4. Willard 'Bud' Larson: The 39-year-old went missing in Aruba on June 9, 1999. He was a construction worker in Seattle, Washington, and was last seen at a windsurfing board shop. He is a white male with blonde hair and blue eyes and last seen wearing a T-shirt and beach shorts and no shoes. The fate of Larson remains unclear as authorities failed to find any details whether he was alive.