location: Umuahia
notes: 11 September. Military forces reportedly killed 180 members of the Igbo ethnicity during operations against Biafra in Asa, Aba, Umahia, and Isiala-Ngwa. This was reported by an organization who identified seven mass graves, thought to contain some of those killed during the operation. The total fatalities were disaggregated by location.
target_text: location: Umuahia, fatalities: 45