#Bring Back Our Girls (BBOG) campaigners and parents of abducted Chibok school girls march during a rally in Abuja, Nigeria August 25, 2016. REUTERS/Afolabi Sotunde

MAIDUGURI, Nigeria (Reuters) - Nigerian soldiers have found a schoolgirl who was one of more than 200 pupils kidnapped by Islamist militant group Boko Haram from their school in the northeastern town of Chibok in April 2014, an army spokesman said on Thursday.

The troops had found Rakiya Abubkar wandering around near Algarno, a former Boko Haram stronghold, the spokesman said. She had a six-month-old baby with her.

A total of 276 schoolgirls were abducted by Boko Haram from Chibok in 2014 in one of the most infamous actions of their insurgency. More than 20 were released in October in a deal brokered by the International Red Cross. Others have escaped or been rescued but about 200 are believed to be still in captivity.

Boko Haram has killed 15,000 people and displaced more than two million during a seven-year-old insurgency aimed at creating an Islamic caliphate in northeast Nigeria.

The group controlled an area about the size of Belgium in early 2015 but has been pushed out of most of that territory over the last year by Nigeria’s army and troops from neighbouring countries.

Last month, the army said it had seized a key Boko Haram camp in its last enclave in Nigeria in the vast Sambisa forest. The jihadists still stage suicide bombings in northeastern areas and in neighbouring Niger and Cameroon.