Firefights on the streets of the Lebanese port city of Tripoli.<br/> <br />At least four people are dead and dozens are wounded, as fighting that's spilled over from Syria's civil war goes into a second day.<br/> <br />The army has sent in reinforcements to try to stop militants using machine guns and rocket propelled grenades along Syria Street, one of the city's main thoroughfares.<br/> <br />Tension had been building since the deaths of at least 14 Lebanese and Palestinian gunmen from northern Lebanon in a Syrian town close to the border.<br/> <br />They appeared to have joined insurgents waging a revolt against Syrian President Bashar al-Assad.<br/> <br />The Syrian uprising is largely being waged by Sunni Muslims, opposed by minorities like Assad's own Alawite sect.<br/> <br />Tripoli is a majority Sunni city, but is also home to a considerable Alawite population.<br/> <br />The sectarian division has made it a flashpoint within Lebanon, and Syria-related violence has flared up a number of times over the past year.
