DAKAR, Senegal — Nigeria’s government is negotiating “seriously” for the release of more than 110 kidnapped Chibok schoolgirls still held by Boko Haram and will exchange more detained members of the extremist group for them if needed, an official said Thursday.

“We will not relent until all are back,” the minister of women’s affairs and social development, Aisha Alhassan, told reporters in the capital, Abuja.

The mass abduction of nearly 300 schoolgirls from a boarding school three years ago brought world attention to Boko Haram’s deadly rampage in northern Nigeria. Thousands have been kidnapped or killed in the group’s eight-year insurgency, with millions driven from their homes.

On Saturday, 82 of the Chibok schoolgirls were released. Nigeria’s government exchanged them for five detained Boko Haram commanders, according to an official who spoke on condition of anonymity. Negotiations with the extremist group, mediated by the International Committee of the Red Cross and the Swiss government, also resulted in the October release of a first group of 21 Chibok girls.

Alhassan said Nigeria’s government had no regrets about exchanging Boko Haram commanders for the schoolgirls.

“We’ll do it again if needed,” she said in comments tweeted by Nigeria’s government.

Families in Chibok were meeting with community leaders to identify the newly freed schoolgirls from photos to determine if they will travel to the capital to meet them.

The young women were joining those released earlier in Abuja.