Two bombs exploded outside the Palace of Justice in central Damascus, state television reported, without giving any immediate word on any casualties.

"Two bombs exploded in the car park of the Palace of Justice in the  Al-Marjeh district of Damascus. A third did not explode," the television said on Thursday, describing the bombings as "terrorist" attacks.

A police source told AFP news agency on condition of anonymity that two magnetic bombs exploded in two judges' cars in the open-air car park, while a third was in the process of being defused.