A series of blasts and the sound of airplanes flying low were heard over the Syrian capital, Damascus, late on Tuesday, residents of the city and Reuters reporters there said.

Israeli warplanes hit a town south of Syria's capital as well as the southern province of Daraa late on Tuesday, residents, security sources and local broadcaster Syria TV said.

Israeli strikes struck the town of Kisweh approximately 20 kilometres (12 miles) south of Damascus, a Syrian security source and Syria TV said.

The security source said a military site was targeted, without providing further details.

Additional Israeli air raids hit a town in the southern province of Daraa, a resident and Syria TV said.

There was no immediate comment from the Israeli military.

Residents of Damascus and Reuters reporters in the city heard the sound of airplanes flying several low passes over the capital and a series of blasts.

The bombardment came hours after Syria condemned Israel's incursion into the country's south and demanded it withdraw, according to the closing statement of a national summit.

Israel moved forces into a U.N.-monitored demilitarized zone within Syria after rebels led by Hayat Tahrir al-Sham (HTS), a former Al Qaeda affiliate, toppled former President Bashar al-Assad in December.

Israeli Prime Minister Benjamin Netanyahu said on Sunday that Israel will not tolerate the presence of HTS in southern Syria, nor any other forces affiliated with the country's new rulers, and demanded the territory be demilitarized.

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