BEIRUT – A car bomb ripped through Beirut on Friday, killing a top security official and seven others, shearing the balconies off apartment buildings and sending bloodied residents staggering into the streets in the most serious blast the Lebanese capital has seen in four years.

Dozens of people were wounded in the attack, which the state-run news agency said targeted the convoy of Brig. Gen. Wissam al-Hassan, the head of the intelligence division of Lebanon's domestic security forces.

Many Lebanese quickly raised the possibility the violence was connected to the civil war in neighboring Syria, which has sent destabilizing ripples through Lebanon for the past 19 months. Al-Hassan led an investigation over the summer that implicated a pro-Syrian Lebanese politician and one of the highest aides to Syrian President Bashar Assad in plots to carry out bombings in Lebanon.