On Sunday, a suicide bomber riding a motorbike blew up himself at a Nusra Front base in the northern province of Idleb, killing four and wounding 13 others.
Activists told Zaman al-Wasl that the bomber targeted the “House of Justice” of Al-Qaeda's Syrian wing in the town of Salqin. A Nusra fighter was among the victims.
The bomber has not been identified yet, they added.