Jerusalem: Syrian anti-aircraft fire shot down an Israeli jet on Saturday, the military said, after Israel intercepted an Iranian drone launched from Syria and struck an Iranian target there.
Footage from northern Israel showed what appeared to be white aircraft debris scattered on the ground.
It was one of the most serious incidents involving Israel, Iran and Syria since the start of the Syrian civil war almost eight years ago.
"A combat helicopter successfully intercepted an Iranian UAV that was launched from Syria and infiltrated Israel," the Israeli military said in a statement.
"IDF (Israel Defence Forces) has targeted the Iranian control systems in Syria that sent the #UAV into Israeli airspace. Massive Syrian Anti-Air fire, one F16 crashed in Israel, pilots safe," Israeli military spokesman Lieutenant Colonel Jonathan Conricus said on Twitter.
Syrian state media cited a military source as saying Syrian air defences had opened fire in response to an Israeli act of "aggression" against a military base and hit "more than one plane".
"The Israeli enemy entity at dawn today conducted a new aggression against one of the military bases in the central region. Our air defences confronted it and hit more than one plane," the unidentified military source said.
Israeli media said the jet crashed in northern Israel.