ROXANA HEGEMAN, Associated Press

WICHITA, Kan. (AP) — A decades-long ordeal ruined a Texas man, but his life might start to get better now that the sex offender in Kansas who stole his identity has pleaded guilty to misusing a Social Security number.

Fernando Neave-Ceniceros’ plea Monday in federal court in Wichita will help prosecutors begin to repair the havoc left behind for Marcus Calvillo, the Grand Prairie, Texas, man whose identity he assumed.

Assistant U.S. Attorney Brent Anderson says he doesn’t know of a case where the theft of an identity had a more devastating impact than this one.

The 41-year-old convicted child sex offender and Mexican national admitted to using Calvillo’s Social Security number to hide his own identity and lack of legal status in the United States. Sentencing is July 25. His attorney declined comment.