Nigerian army says it has rescued another Chibok girl

Of the 276 girls initially seized, scores escaped in the hours after the kidnapping. There are currently 195 schoolgirls still missing.

Abubakar is one of three other schoolgirls who have been found in the past year by Nigerian troops as they fight Boko Haram Islamists.

In October, 21 Chibok girls were released by Boko Haram after negotiations with the Nigerian government brokered by the International Committee of the Red Cross and the Swiss government.

The release was hailed as a breakthrough that would lead to the recovery of remaining girls in captivity.

The Chibok girls drew global attention to the Boko Haram insurgency engulfing the country when US First Lady Michelle Obama joined the #BringBackOurGirls online movement.

Despite winning back swathes of territory from the jihadists, President Muhammadu Buhari has faced intense criticism for failing to recover the young captives, who became the defining symbol of Boko Haram’s brutal campaign to establish a fundamentalist Islamic state in the country.

Boko Haram still poses a threat to the war-torn region, launching sporadic raids on remote villages in Nigeria and deadly attacks on soldiers in neighbouring Chad and Niger.

Nigeria has recently trumpeted a major victory in its battle against Boko Haram, claiming in late December that its army has routed the jihadists from their Sambisa forest stronghold.