A priest in the southern French city of Nice was seriously injured on Sunday in a knife attack committed by a man described as mentally disturbed, officials said. Interior Minister Gérald Darmanin said that, despite the severity of the wounds, the priest’s life was not in danger. A nun was also injured in the assault during morning Mass. The attack took place at the Saint-Pierre-d’Arène church in the centre of the city, not far from the Mediterranean seafront, a police spokesperson said. It came as France was voting in the second round of presidential elections. Mayor Christian Estrosi said he…