A Christian group has met in Nigeria's capital, Abuja, to mark the 16th birthday of Leah Sharibu, the only schoolgirl still held captive by Boko Haram after last year's mass kidnapping in Dapchi.
Leah was held back for refusing to convert to Islam after the Nigerian government negotiated and paid ransom for the release of the other schoolgirls.
"It’s been more than one year since Leah Sharibu was abducted and the painful thing is that we don't know her whereabouts, despite government’s promises," Gloria Samdi, the president of Leah Foundation told the BBC.
On 19 February last year, militants from the Boko Haram faction loyal to the Islamic State group stormed the Government Girls Science and Technical College and kidnapped 110 schoolgirls.
A month later, after negotiating with the jihadists, the government announced the release of all but one of the kidnapped schoolgirls. Leah was held back and not negotiated for on account of her faith.
She has been held captive by the militants for more than 400 days.