Syria's state SANA news agency says two people have been killed and 30 others injured when a car bomb exploded Sunday in Syria's northern city of Aleppo as the country was mourning victims of triple blasts the day before.

A handout picture released by the official Syrian Arab News Agency (SANA) shows Syrian investigators inspecting a car at the blast scene in Aleppo.

The agency says an "armed terrorist group" detonated a booby-trapped car in a residential neighborhood in Aleppo, the second largest city in Syria.

According to witnesses, the explosion was near the Political Security Directorate.

The explosion killed a law-enforcement agent and a woman, and wounded civilians and security agents, two of them seriously.

On Saturday, a car bomb exploded in Damascus at the Yarmouk camp housing thousands of Palestinians in the south of the city. SANA said two "terrorists" were killed when their bomb-laden car exploded at the camp, while the Doha-based al-Jazeera TV quoted sources as saying that a brigadier of the Syrian army was targeted in the blast and was killed along with three Palestinians.

Earlier, two suicide car bombers detonated their explosives near the aviation intelligence directorate and the criminal security department in Damascus, killing 29 civilians and security personnel and wounding 140 others. Hundreds of Syrians attended a funeral Sunday.

Sundays blast was the fourth in Syria since the unrest erupted one year ago. Nobody has claimed responsibility for the explosions, while the Syrian government accuses al-Qaeda fighters of being behind the attacks.