According to local activists, the US coalition carried out an airstrike over al-Andalas farms in Western Raqqa, killing at least 18 civilians near the strategic town of al-Tabaqa.
The US army had previously claimed that only 220 civilians were killed in the air attacks of the coalition under its command in Syria and Iraq since 2014.
The US command also noted that it could not investigate all reports of possible civilian casualties using “traditional investigative methods,” which involves interviewing witnesses and examining the site of the strike.
Instead, the coalition interviewed pilots and servicemen that took part in combat missions to draw results. The US command also reviewed strike surveillance videos and analyzed government and non-governmental organizations’ traditional and social media content.
Also, on Thursday, the US fighter jets' airstrikes on a mosque in Aleppo province killed more than 40 civilians.