Northern Lebanon's town of Arsal bears the scars of five days of brutal violence.

It was here that dozens of people were killed in a battle between the army and Islamist militants, including the Islamic State.

Purported militants and detained fighters are seen in a video released by the Lebanese army - a reminder of the week's unrest.

In this town bordering war-torn Syria, refugees just stare at their burnt down shelters.

Soldiers patrol empty streets.

The militants have left, but they've taken some Lebanese soldiers as hostages.

...Soldiers that Muslim clerics are determined to have released.

The battle in Arsal triggered unrest in other parts of Lebanon, like Tripoli where a bomb exploded near an army patrol Wednesday evening.

And in the now quiet town, charred remains from the fighting.