HARRISBURG, Pa. – For months, the identity of the boy who was sexually assaulted in the locker-room showers by Jerry Sandusky was one of the biggest mysteries of the Penn State scandal. Now, for the first time, a man has come forward publicly to claim he was that boy, and is threatening to sue the university.

The man's lawyers said Thursday they have done an extensive investigation and gathered "overwhelming evidence" on details of the abuse by Sandusky, the former assistant football coach convicted of using his position at Penn State and as head of a youth charity to molest boys over a period of 15 years.

Jurors convicted Sandusky last month of offenses related to so-called Victim 2 largely on the testimony of Mike McQueary, who was a team graduate assistant at the time and described seeing the attack.