At least three Syrian soldiers were killed and seven others wounded in Israeli missile attacks on the southern province of Quneitra, Syrian state media said.
After targeting the outskirts of the capital Damascus, Israel "resumed its aggression and launched several missiles against the east of Quneitra province killing three people and wounding seven other soldiers", the official SANA news agency reported.
Syrian television reported big explosions near Damascus before dawn and said air defences had "confronted the enemy".
The Israeli military said it struck Syrian artillery and aerial defence batteries in retaliation for Saturday's firing of two rockets at the Israeli-occupied Golan Heights.
An Israeli military spokeswoman said it was still unclear who had fired the rockets but the Syrian army was held responsible for any attack launched from Syrian territory.
Agence France-Presse