A car bomb killed at least 20 people in the northern Syrian city of Manbij on Monday, the Syrian presidency said, marking the second attack there in three days and the country's deadliest since Bashar al-Assad was toppled from power in December.
The presidency's statement said it will hold the perpetrators of what it described as a "terror attack" accountable.
"This crime will not pass without the most severe punishment against its perpetrators to serve as an example against those who will try to tamper with the security of Syria or harm its people," the presidency said.
There were no immediate claim of responsibility for the attack. It was the second blast in three days in the area, after four civilians were killed and nine others, including children, were injured in a car bomb attack in the center of Manbij on Saturday, according to Syria's state news agency SANA.
Manbij city is some 30 km south of the Turkish border and to the west of the Euphrates river.
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