Complex sentence: In these articles Khan mentions how Brig Islamullah from the office of DG EME helped him, but does not mention that Brig Islamullah was assisting and that DG EME was Gen Nawab.
Split into simpler sentences: In these articles Khan mentions how Brig Islamullah from the office of DG EME helped him. However he does not mention that Brig Islamullah was assisting and that DG EME was Gen Nawab.