The release of the 82 schoolgirls this month came after an initial group of 21 girls was released in October.
The humanitarian crisis is considered one of the worst in the world.
Dozens escaped in the initial melee, but more than 200 remained missing for more than two years.
82 kidnapped Chibok schoolgirls have been released in an exchange for detained Boko Haram suspects, according to government
“Around 90 people were killed when a Nigerian air force plane circled twice and dropped two bombs in the middle of the town of Rann,” MSF said in a statement.
Oil output by Organization of the Petroleum Exporting Countries (OPEC) member- Nigeria- has fallen to a 20-year low due to a series of attacks on oil pipelines in the southern Niger Delta.
Soldiers fired on speedboats believed to be carrying Niger Delta militants preparing to strike oil
installations and killed or wounded an unknown number, army spokesman said.
The demonstrators, hailing from Biafra in eastern Nigeria, paid homage to those killed during the 1967- 1970 period while defending Biafra and lit candles in their memories.
One of every five suicide bombers deployed by Boko Haram in the past two years has been a child, usually a girl, according to the report.
Under the hashtag #bringbackourgirls, politicians, celebrities and the public globally united to demand the return of the girls who disappeared without a trace.
In 2014, 276 schoolgirls were kidnapped by Boko Haram in Chibok, Boko Haram has carried out suicide bombings often using girls.
Borno State health commissioner Haruna Mshelia said 75 bodies were brought into the hospitals, while 10 others had been buried on Sunday.
The shooting, burning and explosions from three suicide bombers continued for nearly four hours in the unprotected area.
The attack killed at least 10 people and wounded about a dozen others.
Nigeria tanker fire: The disaster took place in Nnewi, a predominantly Christian community in southeast part of the country