Israeli jets bombed a military research facility north of Damascus early Sunday morning, NBC News reported. The attack marked the second Israeli airstrike in Syria in the past three days. According to Reuters, a Western intelligence source said the strike hit Iranian-supplied missiles that were headed to the Hezbollah militia in Lebanon. A rebel spokesman said The Free Syrian Army listed 9 apparent targets, including the Syrian Revolutionary Guard, the 104th brigade headquarters, a weapons depot in Qasyoun and a military research center at Jamraya, NBC News reported. On Friday, Israel launched strikes inside Syria and it’s believed the primary target also was a shipment of weapons meant for Hezbollah, U.S. officials told NBC News. The Israeli spokesman in Washington said that Israel would not comment specifically on the reports but said that “Israel is determined to prevent the transfer of chemical weapons or other game-changing weaponry by the Syrian regime to terrorists, especially to Hezbollah in Lebanon.” It wasn’t clear whether the Israelis alerted the U.S. before the attack. The attacks come as Washington considers how to handle the Syrian regime and its possible usage of chemical weapons in its civil war.