Al Qaeda, one of the world's most dreaded terror outfits, has had nearly 50-60 per cent of its original top leadership eliminated and is looking for more people from parts of Pakistan to carry forward its terror activities, a leading United States expert has said. "Nearly 50-60 per cent of the original top leadership of the Al Qaeda has been eliminated and they are now looking for more people from parts of Pakistan to continue the terror activities," said an expert.