Between June and September last year, at least 440 civilians were killed in fighting between rival groups in Tambura county, 18 injured and 74 abducted, the report found.
At least 64 civilians were also subjected to conflict-related sexual violence, among them a 13-year-old girl who was gang-raped to death, it said, while at least 56 people were reported missing during the June-September period.
