Warplanes carried out Sunday air raids on two villages in northern Syria as Russia said a northern town held by a predominantly Kurdish militia came under fire from the Turkish side of the border, NBC News reported.
The Britain-based Syrian Observatory for Human Rights said the airstrikes hit the villages of Daret Azzeh and Qobtan al-Jabal. The group did not say whether the warplanes were Russian or Syrian, but the Local Coordination Committees said the warplanes were Russian.
The air raids came on the second day of a cease-fire brokered by Russia and the U.S., to curb the violence of the country's five-year civil war.
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It was not immediately clear if the warplanes struck areas controlled by al-Qaeda's branch in Syria, known as the Nusra Front. Both the Nusra Front and the Islamic State group are excluded from the truce.