"At around 23:34 (2034 GMT) the Israeli enemy carried out an aerial aggression... on the area of Palmyra targeting a communication tower and several positions in its vicinity," Syrian state news agency SANA cited a military source as saying.

The Syrian Observatory for Human Rights, a Britain-based war monitor, said that the tower belongs to Iranian fighters, and that the attack targeted other Iranian positions near the T4 airbase.

Last week, an Israeli missile strike on the same airbase in Homs province killed two pro-Iranian foreign fighters, the Observatory reported.

SANA said that attack also wounded six soldiers.

Since the outbreak of the Syrian civil war in 2011, Israel has routinely carried out air strikes inside Syria, mostly targeting Syrian government troops, as well as Iranian and Lebanese Hezbollah forces allied to the Damascus regime.

The Israeli army rarely acknowledges individual strikes but has said repeatedly that it will not allow Syria to become a stronghold of its arch-foe Iran.