Beth Holloway Twitty, Natalee's mother, told Good Morning America that a piece of duct tape with a few blond hairs stuck to it has been found on the southeast side of the island.
Like other potential DNA evidence in the case, the tape has been sent to a lab in the Netherlands for analysis. The missing teenager's mother cautions that there have been many false leads in the seven-week-old case. She continues to insist she will live on the island until Natalee is found.
"There will come a time when I realize I have to take a few days and take care of some things at home, but I will be right back in Aruba and I will see this through. I will see this through to the end, as long as that takes," said Twitty.
Seventeen-year-old Jordan van der Sloot is the last person known to have seen Holloway alive. He remains in jail in connection with her disappearance.
Over the weekend investigators took the handcuffed boy to retrace his steps at the beach he says is the last place he saw Holloway in the early morning hours of May 30.
"That just shows me that the investigation is still ongoing and that's a good sign for me," Twitty said.
But the search for 18-year-old Natalee shows signs of slowing down. On Sunday, after spending more than three weeks combing land and sea looking for any sign of the missing 18-year-old, a team of Texas volunteers packed up and headed home Sunday.