In 752, Pippin resumed the conquest of Arab territories on the Mediterranean coast where his father had failed. Facing local resistance, including intervention by Duke Waifer, in 759 he captured Narbonne and ended Arab rule north of the Pyrenees. Aquitaine was now surrounded by the Frankish kingdom, and in 760 Pippin began its conquest. It took the Franks eight years to subdue Aquitaine, Toulouse and Gascony; in 768, the last pockets of resistance crumbled as Duke Waifer was betrayed and murdered under mysterious circumstances. Although Aquitaine was destroyed after eight years of scorched-earth tactics by Pippin and Waifer, the region would recover under Charlemagne.