Saturday 17 September – a Reaper took part in a coalition air attack in eastern Syria that was alleged to have struck Syrian regime forces by mistake. Another Reaper provided close air support to Iraqi troops near Qayyarah… On Saturday 17 September, a Reaper joined other coalition aircraft in a strike against a reported Daesh position south of Dayr az Zawr in Syria, but this was later alleged to have in fact been a position held by Syrian regime forces; a detailed investigation into the incident is being conducted by the coalition. In Iraq, however, a second Reaper provided effective close air support to Iraqi forces operating near Qayyarah. The Reaper provided surveillance support to two successful coalition air strikes on Daesh mortar teams, then used its own Hellfire missiles to destroy a 152mm howitzer and its tow vehicle.