A car bomb has struck near the Syrian northern city of Aleppo, killing at least 60 members of President Bashar al-Assad's troops, activists have told Al Jazeera. Monday's blast, carried out by a jihadi group affiliated with al-Qaeda, hit near a military complex in the town of al-Douwairinah near Aleppo's international airport, Mohammad al-Hadi, an activist in the city, said. "The car was filled with six tonnes of explosives," he told Al Jazeera.