Air strikes by US-led coalition forces have killed 521 Islamist fighters and 32 civilians during a month-long campaign in Syria, Reuters reported, citing a human rights monitoring group.
At least 464 were militants from Islamic State, an al-Qaeda offshoot which has grabbed large areas of Syria and neighboring Iraq, while 57 were members of the al-Qaeda-affiliated Nusra Front, according to the Britain-based Syrian Observatory for Human Rights said.
Six of the civilians were children and five were women, it added.
The United States has been carrying out strikes in Iraq against Islamic State since July and in Syria since September with the help of Arab allies. Britain and France have also struck Islamic State targets in Iraq.
US Central Command spokesman Colonel Patrick Ryder said on Saturday that Washington took “reports of civilian casualties or damage to civilian facilities seriously and we have a process to investigate each allegation”.
Close to 200,000 people have been killed in Syria’s three-year civil war, according to the United Nations.
Coalition strikes have hit the Syrian provinces of Aleppo, Deir al-Zor, Idlib, Raqqa and al-Hassakah, the Observatory said.
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