Two top editors of Republic TV, which has been accused of rigging viewership ratings, have been summoned by Mumbai Police as part of its probe into the alleged manipulation of ratings by three channels. The channel has called the latest summons a "desperate witch-hunt". Executive Editor Niranjan Narayanaswamy and Senior Executive Editor Abhishek Kapoor were summoned by Mumbai Police on Tuesday. They've been asked to appear before the Crime Intelligence Unit at noon today.