At least 35 civilians were killed on Thursday in airstrikes by US-led international coalition's fighter jets on sites belonging to terrorist Daesh group in the Syrian city of Raqqa, northeast bank of the Euphrates river.

The bombing targeted Daesh militants in the white garden area in central Raqqa, local sources told Sky News.

The sources underlined that the number of victims are most likely to rise, as several bodies were still under ruins.