The attack in Sousian village, a few miles north, killed between 53 and 60 people, according to activist groups Aleppo Media Center and the UK-based Syrian Observatory for Human Rights.
ISIS claimed responsibility for the attack in an online statement.
Turkey’s state-run Anadolu news agency reported that 60 people were killed and at least 100 others wounded, adding that the car bomb targeted a security building for the Free Syrian Army, an association of rebel groups fighting ISIS.
Dozens of Syrians are being treated at a hospital across the border in the Turkish town of Kilis, Anadolu said.
Thirty-three of those killed in the blast have been identified, said Barry Abdullatif, founder of media activist group al-Bab City Coordination.
There were multiple reports Thursday that Turkish-backed Free Syrian Army rebels had pushed ISIS out of al-Bab, near the Turkey-Syria border.
Turkey’s military confirmed in a statement that control had been established in all of the town’s neighborhoods.
“Obstructions, mines and IEDs are being cleared in the areas taken under control,” the statement said.
Turkey launched a cross-border operation in support of Free Syrian Army forces in August, with the aim of clearing the border area of ISIS fighters and preventing Kurdish People’s…