Baalbek, Lebanon: One person was killed and three wounded on Saturday in eastern Lebanon by rockets fired from neighbouring Syria, a security source said.

Four rockets hit the Nabi Uthman and Labweh areas, both of which are sympathetic to the Shiite Hezbollah movement, the source said.

One person was killed and a second injured in Nabi Uthman, and two were wounded in Labweh.

Hezbollah is a staunch ally of the Syrian regime and has dispatched fighters to help it battle the Sunni-dominated uprising against President Bashar Al Assad.

It is reportedly playing a key role in helping regime troops trying to recapture the rebel stronghold of Yabrud in Syria near the Lebanese border.

Sunni extremist groups have targeted Hezbollah strongholds in Lebanon in recent months with rocket and bomb attacks.