Fighting in the northern Syrian city of Aleppo on Tuesday left at least four people dead and several others wounded, state media said, with the government and the Kurdish-led Syrian Democratic Forces trading blame for the violence.

The clashes are the latest to break out in Aleppo as officials scramble to advance a ​deal to address Syria’s deepest remaining fracture by merging the U.S.-backed SDF ‍with the central ⁠government.

The SDF is reluctant to give up autonomy it ‍won during 14 years of war, which left it with control of Islamic State group prisons and oil resources in a country that remains fragile just over a year after the ouster of ex-President Bashar Assad.