Troops in Tripoli
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Tensions remain high in Tripoli

23 August 2012 Last updated at 00:36 BST

The Syrian crisis has spilled over into Lebanon as tensions remain high in the country's north-eastern city of Tripoli.

At least 10 people have been killed and dozens more injured after three days of clashes between Sunni and Alawite militants.

A tentative ceasefire has been implemented although there are unconfirmed reports of sporadic fighting.

The clashes are some of the fiercest seen in the country since the civil war.

The UN has appealed for greater international support to stop the situation deteriorating, as fears grow that the conflict in Syria is re-igniting old rivalries.

The BBC's Barbara Plett reports from Tripoli.