TUNIS--Tunisian President Zine al-Abidine Ben Ali said on Monday people involved in deadly clashes with police in the past few days were guilty of a "terrorist act". The events were violent, sometimes bloody, and caused the death of civilians and wounded several members of the security forces. The events were the work of masked gangs that attacked at night government buildings and even civilians inside their homes in a terrorist act that cannot be overlooked," he said in a speech broadcast by state television. Clashes between protesters and police in recent days have killed 14 people, the worst unrest of Ben Ali's 23 years in power.