Two convicted sex offenders are back behind bars after failing to register in Washoe County. Emmett Thigpen, 52, who was a Tier II sex offender, convicted for crimes against children, failed a 90-day compliance check. James Cornelius, 54, a Tier III sex offender, convicted of sexual assault by force, was arrested on a robbery charge earlier this month; he had been out of compliance since 2018.