Hundreds of schoolboys who were abducted by gunmen in northwestern Nigeria last week have been freed, officials said.

Nigerian police say gunmen attacked a school in the country’s Katsina state.

Boko Haram extremists have killed at least 92 Chadian soldiers in what the president calls the deadliest attack on the nation’s forces

Boko Haram extremists have killed at least 50 Nigerian soldiers in an ambush near Goneri village in northern Yobe state, military officials told The Associated Press

Niger says its army has killed at least 50 Boko Haram extremists after an attack on a military post

Niger's Defense Ministry says at least 12 soldiers have been killed and eight others injured in an attack by suspected Boko Haram extremists in the country's southeast near its border with Chad

Thousands of Nigerian hunters prepare offensive against Boko Haram; 'We fear only God'

Suspected Boko Haram militants killed at least 65 people who had gathered for a funeral in northeastern Nigeria over the weekend, a local official said.

Suspected Boko Haram militants killed at least 65 people who had gathered for a funeral in northeastern Nigeria over the weekend, a local official said.

Land and air raids began on Dec. 28, with more than 200 killed in airstrikes.

Boko Haram has abducted more than 1,000 children in northeast Nigeria since 2013, according to the United Nations' children's agency.

Suspected Boko Haram militants allegedly stormed the town of Dapchi in northeast Nigeria on the night of Feb. 19 and kidnapped 110 students.

The Nigerian government backtracked after initially claiming the girls had been rescued.

Boko Haram kidnaped 276 girls from a boarding school in Chibok, Nigeria.

Video shows 82 Chibok schoolgirls freed by Boko Haram after 3 years in captivity meet with Nigeria's president.

#BringBackOurGirls group said the freeing of 82 girls is "heartwarming."

The U.N. report said Boko Haram regularly uses children suicide bombers.

It’s been three years since Boko Haram abducted 276 schoolgirls from the Nigerian town of Chibok.

The Red Cross and Swiss officials took part in the negotiations.

Esther Yakubu's daughter is one of more than 200 Chibok girls kidnapped in 2014.

Esther Yakubu’s daughter was one of over 200 schoolgirls abducted by Nigerian terror group Boko Haram in the northern town of Chibok on April 14, 2014.

One of the missing Chibok girls kidnapped by Boko Haram in Nigeria has been found, ABC News has confirmed.

Our goal was to get at two simple questions: What’s happened to the missing Chibok school girls, and where are we in the battle against their kidnappers.

The schoolgirls were kidnapped two years ago from a school in Chibok.