More than 387,000 have been killed since Syria’s civil war started in 2011.
At least three of the victims killed were civilians, but the identity of the other two was not immediately clear, the Britain-based Syrian Observatory for Human Rights said.The Turkish defence ministry said two children had been killed and two civilians wounded. Turkey blamed the attack on the Kurdish-led People’s Protection Units , which Ankara accuses of being the Syrian offshoot of the outlawed Kurdistan Workers’ Party , that has waged an insurgency against Turkey since 1984.