Rif Dimashq Province, the Syrian Observatory for Human Rights:

The Syrian Observatory for Human Rights was informed that an unknown gunman opened fire on 2 members of Rahman Corps during their positioning in the outskirts of Arbin city, intersecting sources confirmed to the Syrian Observatory for Human Rights that the shooter is a fighter used to position on the same point, and after killing his 2 friends he went to one of regime’s checkpoints and turned himself in to the checkpoint, no information about the reasons of the kill.