An armed group attacked a UN technical team working on the border between Nigeria and Cameroon, killing five people and wounding several, the United Nations Office for West Africa said on Wednesday.
The attack occurred the day before near the Cameroonian border town of Kontcha, the statement said.
“The victims were a UN independent contractor, three Nigerian nationals and one Cameroonian national,” it added. Mohamed Ibn Chambas, UN Special Representative for West Africa and the Sahel, condemned the attack.
While the attackers have not been identified, the area is in a region where fighters from Islamist militant group Boko Haram are active. The insurgents have killed more than 15,000 people since 2009 and have recently stepped up suicide bombings.
The UN team was working on demarcating the more than 2,000 km land border which has been a source of friction between the neighbouring countries in the past.