At least 352 civilians have been killed in U.S.-led strikes against Islamic State targets in Iraq and Syria since the operation began in 2014, the U.S. military said in a statement on Sunday.

The Combined Joint Task Force, in its monthly assessment of civilian casualties from the U.S. coalition’s operations against the militant group, said it was still assessing 42 reports of civilian deaths.

It added that 45 civilians were killed between November 2016 and March 2017. It reported 80 civilian deaths from August 2014 to the present that had not previously been announced. The report included 26 deaths from three separate strikes in March.

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