Hi Urvish,

We are using this method in such situation, it removes all images from media section:

        /ClearMedia/

        public ActionResult Index()
        {
            if (ApplicationContext.Current == null) return new HttpStatusCodeResult(404);

            //Use the MediaService to create a new Media object (-1 is Id of root Media object, "Folder" is the MediaType)
            //Use the MediaService to Save the new Media object
            var images = string.Empty;

            foreach (var media in ApplicationContext.Current.Services.MediaService.GetRootMedia().Where(media => media.ContentType.Name.Equals("Image")))
            {
                images += media + " " + media.Id + "/r/n ";
                ApplicationContext.Current.Services.MediaService.MoveToRecycleBin(media);
            }

            ApplicationContext.Current.Services.MediaService.EmptyRecycleBin();

            return Json(new { images });
        }

But try to remove this method after using or add authorization filter for security ))

Thanks, Alex