Mortar blasts and heavy machine gun fire rang out overnight around Assal al-Ward, a Syrian town along the border with Lebanon, security sources said Wednesday.
The sources said smoke billowed into the sky from the shelling, which raged well into the night.
Residents could hear mortar blasts and machine gun fire from the fighting between Syrian Army forces and their allies, and rebels.
The fighting startled residents around Brital and other villages in Lebanon’s eastern mountain range, which were attacked last month by Nusra Front militants in a brazen show of force that took the country by surprise.
At least eight Hezbollah fighters and more than a dozen jihadists were killed in last month's battle on the outskirts of Brital and Nahleh, prompting Hezbollah to beef up its presence on the border.