The human rights group also said that although most of the people who died in the explosion were evacuees, but the blast also killed several rebels who were guarding the buses in Rashidin, west of Aleppo. A media unit run by Hezbollah, which backs the Syrian government of Bashar al-Assad, said the suspected attacker detonated a car bomb near the convoy of people evacuated from towns besieged by rebel forces in northern Syria. Image copyright EPA Image caption Injured survivors were taken to hospital in Aleppo

A suicide bomber driving a van supposedly carrying aid supplies blew it up near the coaches, the UK-based Syrian Observatory for Human Rights reports. Thousands were leaving Madaya and Zabadani, including more than 2,000 rebel fighters, their families and other civilians, the monitoring group said. Up to 5,000 evacuees had left a day earlier from Foua and Kefraya, a pair of Shiite-dominated towns in northwestern Syria, roughly 31 miles southwest of Aleppo, as part of a complex population swap brokered by Iran, Qatar and Turkey.
A car bomb strikes a convoy of buses near Aleppo which were carrying evacuees from the pro-government towns of Al-Fu'ah and Kafriya. Over 100 people are killed.