The blast believed to have been caused by a car bomb tore through the Bab al-Salama border crossing, also wounding a large number of people taken to hospitals in the Turkish town of Kilis across the border. Thousands of people have fled from Aleppo through the border crossing in recent weeks because of the government's escalated aerial bombardment there.
The exact number of casualties was not immediately clear.
Turkey's state-run Anadolu agency, meanwhile, reported that the explosion killed at least 10 people.
An online video uploaded by activists showed people ferrying casualties, including a young boy, away from the flames as ambulances rushed to the scene. The video appeared genuine and consistent with Associated Press reporting on the incident.
Also today, the relief agency supporting Palestinian refugees resumed food distribution inside the rebel-held district of the Syrian capital that has suffered from crippling shortages of food and medicine for months, a United Nations spokesman said.
