Three separate incidents have left two soldiers and several gunmen dead in an upsurge of violence in Lebanon.
On the Lebanese -Israeli border an Israeli soldier was killed by what is thought to have been sniper fire from the Lebanese Armed Forces.
A spokesperson for the UN peacekeeping force in the area said efforts were being made to keep things from escalating.
Elsewhere, near the city of Sidon gunmen attacked two Lebanese army checkpoints killing one soldier and wounding three others.
Four attackers were killed in the exchange of fire.
The area was the scene of heavy fighting six months ago between the army and supporters of a Sunni Muslim cleric who backs rebels in neighbouring Syria.
There are fears that Syrian-related clashes could eventually plunge Lebanon back into its own civil war.