(CNN) -- The fate of famed aviator Amelia Earhart remains a mystery after DNA tests on one of three bone fragments discovered on a Pacific island proved inconclusive. Cecil M. Lewis Jr. of the University of Oklahoma's Molecular Anthropology Laboratories reported "the question of whether the bone is human must remain unanswered" until new technologies may make a determination possible. The International Group for Historic Aircraft Recovery (TIGHAR) asked Lewis to test the bones found in 2010 on Nikumaroro, formerly Gardner Island. The bone tested by Lewis may be from Earhart's finger, the group says. Earhart disappeared near the island in 1937 while flying around the world with navigator Fred Noonan. She was later declared dead.
@highlight
Tests on bone fragment proves inconclusive
@highlight
Group is trying to learn fate of aviator Amelia Earhart
@highlight
She and navigator Fred Noonan disappeared in 1937 during flight around the world
@highlight
Some believe they crash landed on a Pacific island
@placeholder, using notes from the doctor, asked two forensic anthropologists to examine the report on the bones.