Israeli soldiers load shells in their tank following the first death on the Israeli side of the Golan since the Syrian civil war erupted more than three years ago, on Sunday, June 22, 2014, in the area of Tel Hazeka, close to the Quneitra border crossing in the Israeli-controlled Golan Heights.

JERUSALEM - The Israeli military says it has carried out airstrikes on a number of military targets inside Syria, including the military headquarters, in response to a cross-border attack that left an Israeli teenager dead.

In a statement early Monday, the military said nine targets were struck and "direct hits were confirmed."

"Yesterday's attack was an unprovoked act of aggression against Israel, and a direct continuation to recent attacks that occurred in the area," said Lt. Col. Peter Lerner, a military spokesman. He said Israel "will not tolerate any attempt to breach Israel's sovereignty and will act in order to safeguard the civilians of the state of Israel".