Rep. Anthony Weiner (D-N.Y.) said today that he did not send a lewd photo to a college student from his Twitter account, but he evaded questions as to whether the photograph was of him.

"Well, the main question that a lot of people are asking is did I send the photograph," Weiner said in an interview with CBS News. "I did not. This was a prank, a hoax."

The congressman avoided answering the question directly to CBS News. In an interview with NBC, Weiner said, "I can't say with certitude" that the picture is not of him.

He told CBS News, "Photographs can be inserted, photographs can be manipulated -- we're trying to get to the bottom of it, but the important thing here is this was a prank made on me."