There was a child among the injured civilians, the SANA broadcaster said.
An Instagram user has posted a photo allegedly showing the motorbike debris after the detonation.
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Al Hasakah is currently controlled by the Syrian army and partly by the US-backed Kurdish-led Syrian Democratic Forces. Over the past two months, Kurd-populated cities across Syria experienced a surge of terror attacks involving blasts of explosive-loaded vehicles.
Syrian soldiers in the streets of Al-Hasakah in eastern Syria
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/ On July 11, at least 11 people were injured by a car bomb blast in the Qamishli city neighboring Al Hasakah.