Fighting breaks out in Tripoli, Lebanon as a fragile truce between Alawite and Sunni militants is broken.

More than 13 people have been killed and hundreds wounded this week in the northern port city.

Troops were deployed Thursday, and clashes appeared to die down.

But, the fighting resumed after a Sunni cleric was killed.

These Sunni fighters claim Alawite militants were sent from Syria to break the agreement.

However, militants from the Alawite camp claim they were provoked.

Until then, Tripoli remains under siege.