Five Lebanese government soldiers have been killed in clashes with militants near the Syrian border, the Lebanese army has said.
Nine militants also reportedly died in the fighting in the village of Ras Balalbek, near the town of Arsal.
No group has claimed responsibility for the gunmen's attack which was repelled.
The area has seen previous incursions by Islamist militants from Syria's conflict. In August, gunmen attacked Arsal, capturing Lebanese soldiers.
Some of the soldiers have since been killed.