More than 3,000 civilians have been killed in US-led coalition air strikes against the Islamic State group in Syria since they began four years ago, a monitor said on Sunday.
The Washington-led alliance puts the toll at just over 1,000 civilians in both Syria and neighbouring Iraq, and says it does all it can to prevent civilian deaths.
The Syrian Observatory for Human Rights, a Britain-based monitoring group, said on Sunday those Syria strikes had since killed 3,331 civilians.
The coalition says it takes every possible precaution to prevent civilian deaths.
In its latest civilian casualty report published last month, the coalition said its strikes had unintentionally killed 1,061 civilians in both Iraq and Syria up until July 30, 2018.