New York Democratic Rep. Anthony Weiner repeatedly denied Wednesday sending a lewd photo on Twitter to a 21-year-old woman last week. Regarding the object in the picture though, Weiner is not sure whether it's his own body or not.

In an interview on Wednesday, Weiner acknowledged, I can't say with certitude that the picture was not of him.

The photo  of a pair of bulging underpants was posted on May 27 and sent to a college student in Seattle. Though it was deleted right away, endless coverage and comment flooded the media. Weiner was a Twitter follower of the photo recipient, who had never met Weiner, and that there had never been any inappropriate exchanges between them.

On Tuesday Weiner refused to answer reporters' questions about the photo scandal, calling it distraction from his work on Capitol Hill. The next day, however, Weiner began to insist that it was done by a hacker. I did not, this was a prank, a hoax, he told CBS News. Weiner said he has retained

an attorney and hired a private security company to investigate the Internet security  to find out what happened, and to prevent future incidents.

Oddly enough, over the weekend Weiner's office insisted that his Twitter account was hacked, which does not match with Weiner's resistant behavior on Tuesday.

To a CBS News' Congressional Correspondent, Weiner said,  Let's remember what happened here. Someone posted something on my Twitter page that was apparently directed at someone who says they don't know me and I don't know her. She says she didn't get it. I didn't send it. So then it becomes how did someone get access to my account, how did someone get access to photographs, is the photograph - was it manipulated, was it dropped in, we don't know.

Weiner is not sure whether the photo depicted his own body. But how can he be unsure? Declining to answer a reporter's question of whether similar photos of him exist, Weiner said, There are photographs of me in the world, yes. I'm trying to draw a line here because I don't want this to get further.

Weiner's bizarre and inconsistent reactions mount more suspicion that the photo was of himself.

As a congressman and son of a lawyer, Weiner knows this crime would call for an FBI investigation. If he had called the FBI when the story came out, the public would already know where the Tweet originated, according to a former Justice Department computer crimes prosecutor, FOX News reported.

Upon learning that the  FBI would not confirm or deny an investigation in the matter, Bill O'Reilly at FOX News gave FBI Director Robert Mueller 24 hours to offer a statement to his show tonight on the incident.