Why do you think he's resigning?   I have seen headlines on this story but not much more. As for the photos thing, this detective doesn't seem definitive on it.  Also is he a forensic expert?  On Friday, a police detective who examined Greitens’ phone told the panel it contained no evidence of the picture. But Madison County Sheriff’s Detective Sgt. Brian Koberna said there is still a possibility the photograph could have been taken and then erased. “There could very well be an image that was taken that day,” Koberna said. “Just because I don’t find a photo, don’t find an item, doesn’t mean it doesn’t exist." In addition, the committee determined Greitens had five phone numbers at that time, suggesting that he could have taken a picture with a different device. http://www.mycouriertribune.com/news/state_news/greitens-issued-a-subpoena-to-appear-before-special-misouri-house/article_127517b3-66be-5c52-a0a2-94f03a348c3c.html