It added that the airstrikes resulted in deaths of 18 SDF fighters .
On 13 April , the United States military stated that CJTF - OIR had bombed a SDF fighting position near Tabqa as it was misidentified as belonging to ISIL .
ISIL added that the airstrikes resulted in deaths of 18 SDF fighters .
On 13 April , the United States military stated that CJTF - OIR had bombed a SDF fighting position near Tabqa as it was misidentified as belonging to ISIL .