Regarding involvement of structures in Weber syndrome all true except:

Ref. API Textbook of Medicine. Pg. 533   Weber's Syndrome constitutes an ipsilateral third nerve paralysis with a contralateral hemiplegia. It is due to a lesion in one half of the midbrain e.g. as a result of occlusion of the paramedian branches of the basilar artery. If there is a localised lesion in the region of the red nucleus, then there is paralysis of upward gaze.