One person was killed and six people were wounded in renewed clashes overnight in Lebanon's northern port city of Tripoli.

News reports on Friday said a man died and two others were wounded when a car refused to stop at an army roadblock in Bab al-Tebbaneh.

Soldiers opened fire after the driver refused to stop. Four soldiers were wounded, one seriously, in an ensuing exchange of fire between fighters from Bab al-Tebbaneh and policemen.

The army had stepped up its security measures and was on alert after a grenade explosion in Bab al-Tebbaneh.

Fighting and grenade blasts are commonplace between the neighboring districts of Bab al-Tebbaneh -- where most residents are Sunni supporters of Prime Minister Fouad Saniora -- and Jabal Mohsen, a largely pro-opposition area of Alawites who support Syria and Hizbullah.

Fourteen people have been killed and more than 100 wounded since June in clashes between the two neighborhoods.

Calm had returned last week after the army moved in, threatening to riposte against any security threats.(Naharnet-AFP)