In Nigeria's capital. Abuja, #BringBackOurGirls activists have held a demonstration in the wake of the killing of aid worker Hauwa Liman by Islamist militants, reports BBC Pidgin's Dooshima Abu.

Ms Liman was taken with two others in the northern Nigerian town of Rann last March. Fellow midwife Saifura Ahmed Khorsa was killed last month.

A 15-year-old schoolgirl is being held by the same militant group, Islamic State's West Africa Province, which is affiliated to the Islamic State group and is a faction of the Nigerian Islamist group Boko Haram.

The #BringBackOurGirls movement began after more than 200 girls were kidnapped from a school in Chibok, north-east Nigeria, in April 2014.