The investigation into the "Baby Doe" mystery is still not done, and now new clues could possibly finally identify the toddler found on a Boston beach on June.

According to The Inquisitr, the first Baby Doe clues were pollen found on the little girl's body. When analysed, the pollen revealed that the girl came from somewhere in the local Boston area. But new Baby Doe clues reveal that the 3-year-old could have traveled around the world before she died.

A chemical detective from a Utah lab revealed the new Baby Doe clues, reported Newser.

The new Baby Doe clues of the tests were released by Salt Lake City laboratory IsoForensics.

The detective reportedly analyzed and compared oxygen isotopes in the girl's hair and teeth to oxygen isotope levels in drinking water around the world, revealing that the girl had moved cross country and that she had lived in different regions in the US, Fox 25 News reportED.

"[This] could explain why there is such a lapse in someone coming forward," according to the forensic expert. "She's lived a transient lifestyle."

"We've pretty much brought all hands on deck for this one." "It is not ZIP code-specific, but we can tell what regions she was in," the president of IsoForensics, told Fox 13. "Food and water from different regions have different isotopes, and the hair and teeth keep a permanent record of that. You can tell the difference between Texas and Utah, for instance."

Baby Doe was discovered inside a trash bag on the Boston beach. She had been outfitted with polka-dot leggings. She had long hair and pierced ears, and her bag revealed a zebra-striped blanket.

According to a Massachusetts State Police spokesman, as told to ABC News, the discovery of the new Baby Doe clues is "another piece in a large puzzle that we're still assembling," adding that more tests are needed to determine if the girl in fact had traveled to other countries.

The new data gathered isn't final however. The isotopes from other US locations still need to be verified from the girl's, a process which detectives hope could identify the girl's killers.

The case of Baby Doe is one which the nation has watched, and is continuing to watch closely.

Law enforcement have been stumped since Baby Doe's remains were found in June by a dog walker at the Deer Island water line, reported The Gloucester Times. Since the discovery of the girl's body, investigators have received about 150 unique leads and have coordinated checks in 35 states as well as abroad, according to the Suffolk County DA's office.