An Israeli air strike over the Golan Heights killed three Syrian military personnel early on Wednesday, Syria's state news agency SANA said.
Israeli military spokesman Avichay Adraee said in a Twitter post on Wednesday that the targets were military sites in southern Lebanon related to Iran's Quds and the Syrian army.
On Tuesday, Israel's military said it had discovered improvised explosive devices (IEDs) on its side of a border crossing point with Syria.
Israel stressed it hit "storage facilities, headquarters and military compounds," adding that "Syrian surface-to-air missile batteries were struck."
Earlier on Wednesday, SANA reported that Syrian air defenses intercepted "Israeli aggression" in the skies over the capital Damascus but later said the action had taken place in the southern area.