At least four people were killed and others wounded on Thursday when a booby-trapped motorcycle exploded in the northeastern province of Hasakah.
The explosion took place in the town of Shallah, south of the city of Ras al-Ayn, which is controlled by the Turkish forces and Turkey-backed rebels in the countryside of Hasakah, according to the Syrian Observatory for Human Rights and SANA.
SANA said the explosion left damages in buildings.
The observatory has repeatedly reported a state of lawlessness in areas controlled by the Turkish forces in northern Syria.
Turkey was able to capture several areas in northern Syria following an offensive last October against the Kurdish militias.
The Syrian government has repeatedly called for the withdrawal of the Turkish and US forces from Syria.