At least 20 people, mostly Syrian fighters from the Free Syrian Army (FSA), were killed after a car bomb exploded in a Syrian town bordering Turkey on Thursday.
According to eyewitnesses, the explosion took place at a gas station near a checkpoint close to the Bab al Salam crossing on the Turkish-Syrian border in northern Syria. The checkpoint was manned by Jabhat al Shamiya, a group from the FSA.
The Bab al Salam crossing is close to the city of Azaz, a major stronghold of Turkish-backed moderate Syrian FSA fighters involved in a major operation to the east against Islamic State in Iraq and the Levant (ISIL) militants who remain along the border.