The air strike was likely carried out by U.S.-led international forces or Iraq
BEIRUT, July 13 (Reuters) - An air strike, probably carried out by U.S.-led international forces or Iraq, struck an Islamic State-held area of eastern Syria, killing 54 people including 28 civilians as well as members of the jihadist group, a war monitor said on Friday.
The Syrian Observatory for Human Rights said the air strike hit the area near the towns of al-Sousa and al-Baghouz Fawkani on Thursday.
Colonel Sean Ryan, a spokesman for the U.S.-led coalition, said that it or "partner forces may have conducted strikes in the vicinity". The coalition would assess the report alleging civilian casualties, he added, in an emailed response to a question from Reuters.
"We have no further information at this time," he added.
The U.S.-led coalition is fighting to crush the remnants of Islamic State on both sides of the border between Syria and Iraq. In Syria it operates in support of the Syrian Democratic Forces (SDF), an alliance of militias that includes Kurds.
The Observatory said the attack had targeted an ice factory east of Sousa a few kilometres (miles) from the border with Iraq. Most of the civilians killed were Iraqis.
The death toll could rise because of dozens more people had been wounded including some in critical condition, the Observatory said.
Earlier reports by the Syrian state news agency SANA and the pro-Damascus al-Watan newspaper accused the U.S.-led coalition of carrying out the air strike. Reuters could not independently verify those reports.
Islamic State was largely defeated in most of the territory it controlled in both countries last year, but fighters still operate in the desert near the border.
(Writing by Tom Perry; Editing by Janet Lawrence and Peter Graff)
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