LINCOLN -- One of dozens of Nebraska inmates who were mistakenly released early after the state miscalculated their sentences has lost his court bid to remain free. Fifty-seven-year-old Bruce Caton had asked a judge to block prosecutors from sending him back to prison, arguing that he already served the minimum of his 10- to 20-year sentence. But online court records say Lancaster County District Judge Robert Otte denied Caton's bid on Friday, saying a trial court couldn't modify a valid sentence once it's pronounced. Plus, Otte said, Caton had filed a habeas corpus challenge, alleging he was being illegally detained. At the time, he wasn't in custody. He is now. Caton was sentenced in 2004 as a habitual criminal. His record includes burglary, kidnapping, rape and robbery.