The Local Coordination Committees opposition network and an anti-government activist in the area said air raids and government shelling in the southern province of Daraa killed at least two people today.
The Britain-based Syrian Observatory for Human Rights, another activist group, reported that air strikes on several areas in Daraa killed a man and a child.
It said warplanes and helicopter gunships attacked the towns of Enkhil and Ghabagheb, as well as the village of Naima and the capital of Daraa province that carries the same name.
The army in recent days also has stepped up its use of barrel bombs in deadly air strikes on rebel-held areas of Daraa. The crude bombs, barrels filled with explosives, fuel and scraps of metal, had so far been used mostly against rebel held areas in the northern city of Aleppo and near Damascus, Syria's capital.
An amateur video released by activists showed smoke billowing from Naima after being struck by barrel bombs. Another video showed men running through dust created by a strike in the city of Daraa before reaching a two-story house bombed into a pile of rubble. A man could be heard shouting in the background: "My father!"