The Israeli military says it has carried out a "large scale attack" against Iranian targets in Syria.
The military says its planes struck 12 targets on Saturday including three aerial defense batteries and four Iranian targets that are part of Iran's military establishment in Syria.
It says that during the attack anti-aircraft missiles were fired toward Israel, triggering alarms that were heard in northern Israel.
The attack came after Israel shot down an Iranian drone that infiltrated the country. An Israeli F-16 was subsequently shot down.
The military says it is "ready for various scenarios and will continue to act according to situation assessments."
Earlier, a Syria war monitor said Israel had struck targets in central Syria and the southwestern suburbs of the capital Damascus in two separate and successive waves of airstrikes.
The Syrian Observatory for Human Rights says the first round targeted in the central desert area where Syrian troops and their Iranian-backed allies including Hezbollah are known to maintain bases. It cited unconfirmed reports of casualties among Syrian government forces and allied militiamen.
The Britain-based Observatory, which monitors the Syria war through a network of activists on the ground, says the second round targeted outposts in the southwestern suburbs of Damascus.
