Video: Aftermath of Aleppo car bombs broadcast on Syrian state TV Five minutes after the first explosion a second bomb exploded. A third exploded ten minutes after that," a state television reporter said. There was a fourth car bomb which exploded before engineering units could defuse it. The station also broadcast footage of three dead men disguised as soldiers in army fatigues who it said were shot by security forces before they could detonate explosive-packed belts they were wearing. One appeared to be holding a trigger device in his hand. Rebels fighting to overthrow President Bashar al-Assad announced last week a new offensive in Aleppo, Syria's largest city and commercial hub of 2.5 million people, but neither side has appeared to make significant gains so far. The explosions also came a week after rebels bombed military command buildings in the heart of Damascus and clashed with security forces for several hours.