Two explosive devices separately went off Sunday in the Syrian capital of Damascus, killing at least one person, as the opposition activists reported other blasts in central and western Syria.

In Damascus, both explosive devices were affixed under two cars in the upscale district of al-Mazzeh, the pro-government Sham FM radio said, adding that the first one exploded before the crack of dawn Sunday while the other one went off in the afternoon.

The report stopped short of identifying the targets of the explosions, whose occurrences have become a daily routine along with the mortar shelling from rebel strongholds around the capital.

Meanwhile, the state-run SANA news agency cited a military source as confirming that the Syrian army personnel ambushed armed "terrorists" on Sunday along Idlib-Sarmeen highway in northern Syria, killing and wounding most of them.

The source added that most of the killed were non-Syrian.

Also, the army has raided several rebels' positions in the Damascus suburbs of Jobar, Douma, Adra and al-Outayba and caused many casualties, according to SANA.

The report also said that the army stormed the dens of armed rebels in the northern city of Aleppo, namely in al-Breij, Beideen and Bustan al-Basha.

On the opposition side, the Britain-based Syrian Observatory for Human Rights said two explosions shook the Tariq Halab neighborhood of the central province of Hama, adding the blasts were coupled with violent clashes between regular forces and rebel fighters in that area.

The Observatory has stopped short of giving details on casualties and reported another big blast in southern villages of the western coastal city of Banias without giving a death toll. Endi