Researchers believe that new evidence supports the theory Amelia Earhart did not die in a plane crash, but as a castaway on a remote island.

Earhart’s plane was last seen on radar on July 2, 1937, as she tried to establish a record as the first woman to fly around the world.

The International Group for Historic Aircraft Recovery (TIGHAR) said in September that they found evidence that Earhart made more than 100 radio transmissions in the days after her plane went missing, reported. The group believes the radio transmissions prove that Earhart landed her plane safely, and was thus able to use the radio to call for help.

TIGHAR said in a statement that new evidence shows partial skeletal remains found in 1940 on the island of Nikumaroro, which is located between Hawaii and Australia, could belong to Earhart.

According to the TIGHAR, the bones were analyzed in 1940, but a doctor concluded they belonged to a male and the bones were later lost.

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