On 15 August 2016, a suicide bombing that targeted a packed Syrian rebel junction at the Atmeh border crossing, killed 50 Syrian rebels, several civilians, and reports of 2 wounded Turkish soldiers. The attack was claimed by Islamic State, that stated it targeted Syrian rebel fighters from Faylaq al-Sham and Harakat Nour al-Din al-Zenki. Around 32 dead fighters were from the Nour al-Din al-Zenki group.
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Text from the Wikipedia article “2016 Atmeh attack”, available under CC BY-SA 4.0.