The strike, in the north-east of the country, was said to have killed IS leader Abu-Hashum al-Umawi
The US military said it carried out an airstrike on Thursday in northern Syria that killed two Islamic State members including a leader it named as Abu-Hashum al-Umawi.
The strike came just hours after a rare US helicopter raid on a government-held village in Syria’s north-east killed another Islamic State official.