The state-run Syrian Arab News Agency (SANA) reported on Tuesday that three members of Syria's Internal Security Forces and several civilians were also injured in the SDF attacks on checkpoints located in the Sheikh Maqsoud and Al-Ashrafieh neighbourhoods in the northern city of Aleppo. list of 4 itemsend of list Fighters fired mortar shells and heavy machine guns in the clashes while SDF snipers had taken up positions on rooftops in the neighbourhoods, SANA reported, citing a local security source.