An airstrike carried out by an unidentified warplane killed ten Hezbollah fighters in eastern Syria, three sources familiar with the incident told Reuters on Monday.
The identity of the warplane was not confirmed, but the sources did not rule out the possibility that it was Russian "friendly fire." The sources did not say when the strike happened.
Asked about a report that a U.S. drone carried out the strike, the spokesman of the U.S.-led coalition said the location was outside its area of operations.
The coalition is also conducting airstrikes in Syria against Islamic State in support of the Syrian Democratic Forces, an alliance of Arab and Kurdish militias.
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