ConflictStats

Nigeria › Borno state › September 2025

Borno state: conflict events in September 2025

Monthly report from UCDP event data for Borno state, Nigeria. Country-wide report: Nigeria, September 2025.

32events25 the month before
216est. deathsrange 204–257
66civilian deaths

In September 2025, UCDP recorded 32 organized-violence events in Borno state, Nigeria, with 216 estimated deaths. That is +28% compared with 25 events the month before. The death toll range is 204 to 257.

84% of the month's events were state-based armed conflict. Civilian deaths: 66.

The most active pairing was Government of Nigeria - IS with 22 events.

Where events happened

2025-09-30: Government of Nigeria vs JAS (2 deaths)2025-09-29: Government of Nigeria vs IS (2 deaths)2025-09-29: Government of Nigeria vs IS (0 deaths)2025-09-27: Government of Nigeria vs IS (11 deaths)2025-09-27: Government of Nigeria vs IS (1 deaths)2025-09-27: Farmers (Nigeria) vs Herders (Nigeria) (1 deaths)2025-09-26: Government of Nigeria vs JAS (1 deaths)2025-09-25: Government of Nigeria vs IS (0 deaths)2025-09-25: Government of Nigeria vs IS (1 deaths)2025-09-23: Government of Nigeria vs IS (1 deaths)2025-09-23: Government of Nigeria vs IS (1 deaths)2025-09-23: Government of Nigeria vs IS (1 deaths)2025-09-22: Government of Nigeria vs IS (1 deaths)2025-09-22: JAS vs Civilians (2 deaths)2025-09-21: Government of Nigeria vs IS (0 deaths)2025-09-20: Government of Nigeria vs IS (3 deaths)2025-09-19: Farmers (Nigeria) vs Herders (Nigeria) (1 deaths)2025-09-19: Government of Nigeria vs IS (1 deaths)2025-09-18: Government of Nigeria vs IS (39 deaths)2025-09-15: Government of Nigeria vs IS (8 deaths)2025-09-15: Government of Nigeria vs IS (3 deaths)2025-09-11: Government of Nigeria vs IS (0 deaths)2025-09-11: Government of Nigeria vs IS (3 deaths)2025-09-06: Government of Nigeria vs JAS (1 deaths)2025-09-05: JAS vs Civilians (58 deaths)2025-09-05: Government of Nigeria vs JAS (30 deaths)2025-09-05: Government of Nigeria vs JAS (5 deaths)2025-09-04: Government of Nigeria vs IS (2 deaths)2025-09-03: Government of Nigeria vs IS (16 deaths)2025-09-03: Government of Nigeria vs IS (15 deaths)2025-09-03: Government of Nigeria vs IS (5 deaths)2025-09-01: IS vs JAS (1 deaths)
Recorded organized-violence events in Borno state, September 2025. Circle size scales with estimated deaths.State-based Non-state One-sidedOutlines: Natural Earth.

Deadliest events, September 2025

DateWherePartiesEst. deaths
5 Sep 2025Bama lga
Borno state		JAS vs Civilians
One-sided, 58 civilian, 15 sources		58
58–85
18 Sep 2025Bama lga
Borno state		Government of Nigeria vs IS
State-based, 5 civilian, 10 sources		39
39–40
5 Sep 2025Bama lga
Borno state		Government of Nigeria vs JAS
State-based, 4 sources		30
3 Sep 2025Gwoza lga
Borno state		Government of Nigeria vs IS
State-based, 5 sources		16
3 Sep 2025Mobbar lga
Borno state		Government of Nigeria vs IS
State-based, 5 sources		15
13–16
27 Sep 2025Mafa lga
Borno state		Government of Nigeria vs IS
State-based, 3 sources		11
15 Sep 2025Kukawa lga
Borno state		Government of Nigeria vs IS
State-based, 6 sources		8
5 Sep 2025Bama lga
Borno state		Government of Nigeria vs JAS
State-based, 6 sources		5
3 Sep 2025Bama lga
Borno state		Government of Nigeria vs IS
State-based		5
0–5
20 Sep 2025Borno stateGovernment of Nigeria vs IS
State-based, 2 sources		3
2–3

Parties

PartyEventsEst. deaths
Government of Nigeria27153
IS23115
JAS8100
Farmers (Nigeria)22
Herders (Nigeria)22

All months

Monthly reports:Jul 2026Jun 2026May 2026Apr 2026Mar 2026Feb 2026Jan 2026Dec 2025Nov 2025Oct 2025Sep 2025Aug 2025Jul 2025Jun 2025May 2025Apr 2025Mar 2025Feb 2025Jan 2025Dec 2024Nov 2024Oct 2024Sep 2024Aug 2024Jul 2024

← Borno state overview

Source: UCDP GED and Candidate Events, CC BY 4.0. See methodology.