Syria has protested to the United Nations about a reported Israeli violation of Syrian airspace, accusing the Jewish state of "aggression."
Syria's U.N. ambassador, Bashar al-Jaafari, lodged the complaint in a letter Tuesday to Secretary-General Ban Ki-moon and the Security Council.
Jaafari said Israeli aircraft "dropped some munitions." He denied news reports that Israel had landed troops on Syrian territory.
Syria last week said it fired at Israeli aircraft that had violated Syrian airspace and dropped munitions on Syrian territory.
Earlier, news agencies quoted anonymous U.S. officials Tuesday as saying an Israeli airstrike occurred deep inside Syria. State Department spokesman Sean McCormack refused to confirm a CNN report that the strike targeted an Iranian arms shipment through Syria to the Lebanese-based Islamic militant group Hezbollah.
Israel has refused comment on the matter.
On Monday, Turkish authorities said they believe Israeli warplanes dropped two fuel tanks found last week near Turkey's border with Syria.
Peace talks between Syria and Israel have been frozen since 2000.
Some information for this report was provided by AP and Reuters.