Yet another prosecution witness in the Sohrabuddin Shaikh alleged fake encounter case turned hostile on Wednesday, taking the number of such witnesses to 50 so far. Two witnesses, Manjusha Apte and Salim Khan, were examined by the CBI before special judge S J Sharma in connection with the alleged fake encounters of Shaikh and his aide Tulsi Prajapati, who were killed in 2005 and 2006, respectively.