One man was killed and five others wounded in two separate exchanges of fire in the northern Lebanese city of Tripoli on Thursday, a security source said.
The death came after days of unrest in the city, where violence has frequently erupted between pro- and anti-Syrian neighbourhoods.
The security source identified the dead man as Moatassem al-Shamra, 26, who was killed in an exchange of fire in the Qubbeh neighbourhood that also wounded two others.
Two more people were injured by gunfire in the Bab el-Tebbaneh neighbourhood, the source said, adding that a soldier had also been wounded in the city, but it was unclear where.
The incidents came a day after a sniper shot dead one person in Bab el-Tebbaneh, according to a security source, who said four others were wounded in an exchange of gunfire that followed.
Tripoli has been rocked by deadly clashes between supporters and opponents of the Damascus regime, where a two-year conflict has killed at least 70,000 people according to UN estimates.