ISGS Ambush Kills ~26–28 in Niger's Tillabéri Region — Deadliest Single Strike in Recent Months

Around May 14, 2026, Islamic State Sahel Province (ISSP/ISGS) fighters ambushed a security patrol in Niger's Tillabéri Region, reportedly killing approximately 26–28 fighters in what monitors described as the deadliest single ambush in the region in recent months. The attack occurred near the area around Tongo Tongo — the same region where a 2017 ISGS ambush killed 4 US Special Forces soldiers. Zagazola Makama, a regional conflict monitor, reported 26 militia killed in the ISGS attack. Niger's security environment in Tillabéri has deteriorated significantly since the July 2023 coup expelled French and US forces; IS-Sahel Province has since operated with reduced surveillance and aerial interdiction pressure. Tillabéri has seen over 1,200 conflict deaths in 2025 alone per ACLED. The ambush occurs in the same week as JNIM operations against Burkina Faso (Djibo, Diapaga, Diabou) and Mali's ongoing Bamako siege, demonstrating the coordinated operational pressure across all three AES member states simultaneously. Niger's AES/Unified Force recently claimed to have killed 150+ militants in Tillabéri on May 6, but ISGS has demonstrated the ability to absorb such losses and continue high-tempo operations in the region. Exact date and precise casualty figures are uncertain; the event is sourced from a single regional monitor (Tier 3).