The Nigerian army says it has rescued 200 girls and 93 women from Boko Haram camps in the Sambisa forest.
It was hoped that the Chibok girls, who were kidnapped by Boko Haram almost exactly a year ago, had been found but the Nigerian military said they are not among those rescued.
The rescue occurred during a mission to wrestle back control of the Sambisa forest from Boko Haram.
Army spokesman Col. Sani Usman said troops destroyed and cleared four militant camps and rescued 200 abducted girls and 93 women "but they are not the Chibok girls".
It was added that Nigerian troops had also destroyed three camps run by the militants.
The girls and women will be screened on 29 April to determine whether they had been abducted or if they were married to the militants, one intelligence source said.
"Now they are excited about their freedom," he said. "Tomorrow there will be screenings to determine whether they are Boko Haram wives, whether they are from Chibok, how long they have been in the camps, and if they have children."
Some of the girls were injured, and some of the militants killed.
In pictures: Nigeria kidnapped schoolgirls
In pictures: Nigeria kidnapped schoolgirls
A total of 276 girls were abducted from the northeastern town of Chibok, in Borno state, which has a sizeable Christian community. Some 223 are still missing
One of the kidnapped girls looks into a camera
One of the missing girls talking to the camera
The missing Nigerian schoolgirls, wearing the full-length hijab and praying in an undisclosed rural location. Boko Haram alleging they had converted them to Islam
Girls wearing the full-length hijab holding a flag reading "There is no god, but Allah" and "Mohammed is Allah's prophet"
A man claiming to be the leader of Nigerian Islamist extremist group Boko Haram Abubakar Shekau
Abubakar Shekau speaks on the video
Girls, wearing the full-length hijab and praying are filmed by an unidentified man (R) in an undisclosed rural location
People carry signs as they attend a protest demanding the release of abducted secondary school girls in the remote village of Chibok in Lagos
A protester demonstrates against the kidnapping of school girls in Nigeria, outside the Nigerian Embassy in London
Chief International Correspondent Christiane Amanpour and Prime Minister David Cameron appearing on the BBC1 current affairs programme
People participate in a "Bring Back Our Girls" campaign demonstration and candlelight vigil in Los Angeles
Girls holding heart shaped banners in a "Bring Back Our Girls" campaign demonstration and candlelight vigil in Los Angeles
14/19 South Africa
South Africans protest in solidarity against the abduction of hundreds of schoolgirls in Nigeria by the Muslim extremist group Boko Haram and what protesters said was the failure of the Nigerian government and international community to rescue them, during a march to the Nigerian Consulate in Johannesburg
Karilyn Coates (10) joins others in a candlelight vigil for the more than 300 girls abducted by Boko Haram in Nigeria, at All Souls Unitarian Church in Colorado Springs
Mothers of the missing Chibok school girls abducted by Boko Haram Islamists gather to receive informations from officials. Nigeria's president said that Boko Haram's mass abduction of more than 200 schoolgirls would mark a turning point in the battle against the Islamists, as world powers joined the search to rescue the hostages
Former Nigerian Education Minister and Vice-President of the World Bank's Africa division (3rd L) Obiageli Ezekwesilieze speaks as she leads a march of Nigeria women and mothers of the kidnapped girls of Chibok, calling for their freedom in Abuja
18/19 Bring Back Our Girls
Kelly Hoppen tweeted: 'Please make sure you do this, we must stand together and not forget them'
19/19 Bring Back Our Girls
E.L. Rock Star tweeted: 'Join The Movement'
Boko Haram kidnapped more than 200 schoolgirls near the northern village of Chibok in April 2014.
The actions of the militant group sparked international outcry and a widespread campaign for their rescue.
Muhammadu Buhari, Nigeria’s former military major general who won last month's elections, gave the following statement to mark the anniversary of the atrocity.
"[Today] we remember the kidnapping of 276 girls from a school in Chibok one year ago. This crime has rightly caused outrage both in Nigeria and across the world.
"[Today] is a time to reflect on the pain and suffering of the victims, their friends and families. Our thoughts and prayers, and that of the whole Nigerian Nation, are with you today.
"I want to assure all of them, and particularly the parents, that when my new administration takes office at the end of May, we will do everything we can to defeat Boko Haram. We will act differently from the Government we replace: we hear the anguish of our citizens and intend to respond accordingly."
Diplomats and intelligence officials said they believed at least some of the girls were being held in Sambisa forest which is around 100 km (60 miles) from Chibok, although US reconnaissance drones failed to find them.
Nigerian forces backed by warplanes invaded the vast former colonial game reserve late last week as part of a push to win back territory from the group.
Additional reporting by Reuters, AP