The first of the missing Chibok girls has been found in Nigeria, activists say.
The girl was found by a vigilante group on Tuesday in the Sambisa Forest, close to the border with Cameroon, the BBC reported.
Women's rights activist Hauwa Abdu told the BBC the girl was said to be with the Nigerian military.
Nigerians last month marked the second anniversary of the mass abduction of the girls by Islamic extremists of the Boko Haram militant group.
The fighters stormed and firebombed the Government Girls Secondary School on April 14, 2014, and seized 276 girls who were preparing for exams.
YaKubu Nkeki says his niece Amina Ali Nkeki was found wandering in the forest. He says the 19-year-old is pregnant and "suffering a trauma problem".
He says the young woman was brought to Chibok and reunited with her mother, but her father died while she was held captive.
Community leader Pogu Bitrus says other Chibok girls may also have been rescued by soldiers hunting down Boko Haram in the remote northeastern Sambisa Forest on Tuesday night.
He said soldiers later took the young woman away, apparently to a military camp in the town of Damboa.
Nigeria's military has not yet commented on the rescue.
It's not known how many thousands of girls, boys and young women have been kidnapped by Boko Haram in a nearly seven-year-old insurgency that has killed some 20,000 people and spread across Nigeria's borders.
Nigeria's military has reported freeing thousands this year as they have forced the extremists from towns and into strongholds in the sprawling Sambisa Forest. Boko Haram has turned to soft targets using suicide bombers.
