Vandals have set fire to a disused 12th Century mosque in the centre of Jerusalem and left graffiti insulting the Prophet Muhammad on its walls, the BBC said. Jerusalem’s mayor denounced the attack, which caused no structural damage. The incident is being linked to a wave of attacks by Jewish settlers and right-wing extremists angered by what they see as Israeli government attempts to restrict settlement building. Early on Tuesday, protesters broke into an Israeli army base in the West Bank. Prime Minister Benjamin Netanyahu called the violence “intolerable” and told security forces to “to act aggressively” against those responsible.