WICHITA, Kan. (AP) — A Texas man whose life was ruined by a convicted child sex offender who stole his identity has seen his impostor sentenced in a federal courtroom in Kansas.

Marcus Calvillo of Grand Prairie, Texas, can now begin to repair the havoc left from a decades-long ordeal that prosecutors call one of the most devastating identity theft cases they’ve seen.

Fernando Neave-Ceniceros was sentenced Monday to a year and a day for misusing a Social Security number. His plea deal will help prosecutors clear his victim’s name more quickly.

Neave-Ceniceros says he feels bad and is sorry. He says he never meant to hurt anybody.

Calvillo told the court he is now 45 years old and would like to have what’s left of his life solely to himself.