There have been clashes between gunmen from rival Lebanese clans in the continuation of a long-running feud in the eastern city of Baalbek.
Baalbek has been hit by violence in recent months
Three people were wounded by stray bullets as the Jaafer and Zeiter Shia Muslim clans exchanged machinegun and rocket propelled grenade fire.
Lebanese army units cordoned off the area and brought an end to the clash.
It was not immediately clear what had sparked the incident in the al-Sharawneh area of Baalbek.
Parliament member Ghazi Zeiter blamed the violence on past killings and disputes between the two clans, the Reuters news agency reported.
The feud has claimed the lives at least four people on both sides last year. Correspondents say vendetta attacks are common in the region.
The clashes occurred ahead of voting in the Lebanese general election, due in the eastern Bekaa Valley area on 12 June.