A massive bomb blast claimed by the ISIS group killed at least 44 people and wounded dozens on Wednesday in the Kurdish-majority Syrian city of Qamishli.
It was the largest and deadliest attack to hit the city since the beginning of Syria's conflict in March 2011.
Syrian state media gave a toll of 44 dead and 140 injured in the bombing, which hit a western district of the city where several local Kurdish ministries are located.
The Britain-based Syrian Observatory for Human Rights monitor gave a toll of 48 dead, adding that children and women were among those killed.
Kurdish officials said the attack was carried out by a suicide bomber driving an explosives-laden truck.
The blast was initially described as a double bombing, but local officials and the Observatory said the bomb had detonated a nearby fuel container, leading to reports of a second explosion.
One man running along the streets was completely covered in blood, his shirt drenched red.
He was gripping the arm of a small boy whose face was grey and red with blood and dust.
They ran past a hysterical woman who was crying and screaming, her clothes torn. A girl and boy stood next to her, apparently in shock.
Children could be heard screaming as smoke rose from small fires that continued to burn amongst the rubble.