Regime bombardment on al-Buweida al-Sharqiya, Homs province, on Wednesday (April 17th) killed at least 12 people, including two women and two children, the Syrian Observatory for Human Rights said.
Also in Homs, clashes with regime forces killed three opposition fighters on the outskirts of the town Abel.
Clashes on the perimeter of Abel, al-Buweida al-Sharqiya, and a number of other towns in the province saw "violent clashes" between opposition fighters and regime forces supported by pro-regime gunmen, some of whom are members of Hizbullah, the Observatory said.
In Damascus province, violent clashes broke out between opposition fighters and regime forces in Jdeidet Artouz and al-Ataba, the Observatory said, while Zamalka and Moadamiyet al-Sham were bombarded by regime forces.
The Free Syrian Army has repeatedly accused Hizbullah of assisting regime forces in attacking opposition fighters in the Qusayr region near Lebanon's northern border.