actor1: Unidentified Armed Group (Nigeria)
actor2: Civilians (Nigeria)
notes: Unidentified gunmen killed a UN official, 3 Nigerians, 1 Cameroonian while in the process of demarcating and delineating the Nigeria-Cameroon border in line with the judgment of the International Court of Justice.
target_text: actor1: Unidentified Armed Group (Nigeria), actor2: Civilians (Nigeria)