A suicide bomber riding a motorbike on Sunday blew up himself in Nusra Front's base in northern province of Idlib, killing 4 people and wounding 13 others.
Activists told Zaman al-Wasl that the bomber had targeted 'Justic House' of al-Qaeda's Syria wing in Salqin town. one Nusra fighter was among the victims.
The identity of the bomber has not yet known, they added.
Zaman Al Wasl