Nigeria: UN chief ‘appalled’ by killing of aid worker; calls for release of remaining hostages

The aid worker, Hauwa Mohammed Liman, a 24-year-old midwife and nurse had been working in the town of Rann, near the border with Cameroon. She was abducted on 1 March, along with two other nurses, Saifura Hussaini Ahmed Khorsa and Alice Loksha, following an attack on the town by armed extremists, in which dozens were killed.