Rockets from the Syrian side of the border wounded at four people in the northeastern town of Hermel, security sources said.
The sources said more than half a dozen rockets fell on the residential neighborhoods of Dora and Maaleh.
A grove in Dora caught fire after a direct hit by a rocket.
Following the attack, a group of gunmen from Hermel attacked a resident from the Bekaa town  of Arsal, the sources said.
The sources said the residents of Hermel have accused the residents of Arsal of being involved in the rocket attacks fired against Hermel and Baalbek.