A motorcycle bomber killed at least 16 civilians outside a bakery in Syria's Hasakeh city Tuesday, on the eve of the feast marking the end of Ramadan, an official said.
The attack, which also wounded dozens of people, occurred in the neighbourhood of Salihiah ahead of the Eid al-Fitr festival.
It was not immediately clear who carried out the attack, but Daesh terrorist group has claimed previous bombings in the mainly Kurdish region.
Rami Abdel Rahman, head of the Syrian Observatory for Human Rights, said the attack killed at least 16 people and wounded another 40.
The death toll was confirmed to an AFP correspondent. The suicide attacker reportedly detonated his explosives in front of the bakery.
"A suicide bomber on a motorcycle blew himself up in the Salihiah neighbourhood of Hasakeh city," said Abdel Rahman.
Fifteen of the wounded were in critical condition, said the head of the Britain-based group that relies on a network of sources on the ground for its information.
Hasakeh city is the capital of the province of the same name.
Nearly all of the province is controlled by the PKK's Syrian affiliate PYD and its armed wing YPG terrorist organization. The militants have declared an autonomous region across the mainly Kurdish northern areas they hold.
A US-backed alliance of Kurds and Arabs, The Syrian Democratic Forces alliance has been locked in battle in the neighbouring province of Aleppo for control of the Daesh stronghold of Manbij for more than one month.
The SDF launched the offensive in late May and encircled the town and entered its southwestern districts on June 23.
More than 280,000 people have been killed and millions have been displaced since Syria's conflict broke out in March 2011.
