BATON ROUGE — A Donaldsonville man was sentenced to 36 months in federal prison for failing to register as a sex offender, according to federal prosecutors.

Patrick Sullivan, 32, also will serve five years of supervised release after his prison term. He was arrested in Donaldsonville on Aug. 25, 2025.

In his guilty plea, Sullivan admitted he traveled to Baton Rouge in 2024 and later to Donaldsonville, where he established residency and domicile in January 2025. He also admitted he knowingly failed to register as a sex offender in Louisiana.

The release said Sullivan was convicted of sexual assault of a child in Dallas County, Texas, in July 2021 and was sentenced to three years in prison. Federal prosecutors said that conviction requires him to register as a convicted sex offender for life.