DAMASCUS, Syria -- A suicide bomber blew himself up near the headquarters of Syria's Greek Orthodox Church in Damascus' Old City, killing at least four people Thursday, minutes after the patriarch had entered the cathedral, state-run TV and a church official said.

The blast in the ancient quarter of narrow streets and historic buildings was the first reported suicide attack of the Syrian civil war inside the Old City, although other such bombs have struck the capital of Damascus during the conflict.

The blast struck in the vicinity of the Virgin Mary Cathedral in the predominantly Christian neighborhood of Bab Sharqi, the broadcast said, although it was not clear if the church was the attacker's target. Several people also were wounded, the TV said.

SANA, Syria's state-run news agency, said a nearby clinic run by a Muslim charity appeared to be the target. That was also the view of Bishop Ghattas Hazim.

But Lebanon's Al-Mayadeen TV, which has reporters in Damascus, said the target appeared to be a nearby post of the National Defense Forces, a paramilitary force fighting the rebels who are trying to topple President Bashar Assad.

Residents also disagreed about the target, with some saying the bomber may have detonated the explosives prematurely. A government official said the bomber was wearing a belt of explosives and blew himself up near the church.

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