Syria accused Israeli jets of bombing two installations inside the country on Sunday, one near the capital, Damascus, and the second in a town near the Lebanese border.

The report by Syrian state television described the attack as “an aggression”. It said the air raids occurred near Damascus’s international airport and in the town of Dimas.

The state news agency Sana said: “The Israeli enemy attacked Syria by targeting two safe areas in Damascus province, namely the Dimas area and the area of Damascus international airport.” It said no casualties were reported.

There was no immediate comment from Israeli officials.

Speculation in the immediate aftermath suggested that the target of the strikes might have been advanced Russian-made S300 surface-to-air missiles.

The Syrian Observatory for Human Rights, a UK-based group that monitors the country’s civil war through a network of activists on the ground, said the strike near the Damascus airport hit a warehouse, and it was unclear what was in the building.

The Observatory said around 10 explosions could be heard outside a military area near Dimas. It had no word on casualties in either strike.

Israel has carried out several air strikes in Syria since the revolt against Bashar al-Assad began in March 2011. Binyamin Netanyahu has repeatedly threatened to take military action to prevent Syria from transferring sophisticated weapons to its ally Hezbollah.

In June, Israel struck targets inside Syria, including a military installation, following a cross-border attack that killed an Israeli teenager. Israel said at the time that it had struck nine military targets inside its northern neighbour and had confirmed “direct hits”.