DUBUQUE, Iowa — Jeffry Thomas Dierksen, 43, was arrested Tuesday morning on a felony charge of failure to comply with the sex offender registry, according to Dubuque County arrest records.

Dierksen , was taken into custody at 11:12 a.m. on Oct. 6, 2026, at 770 Iowa Street in Dubuque. The arresting officer is listed as R.J. Neumann. The case is recorded under arrest report AR 2026001596.

Court and registry records show Dierksen was previously convicted on Oct. 25, 2021, in Jones County of enticing a minor. The victim in that case was a female between the ages of 14 and 17. He is listed on the Iowa Sex Offender Registry as a Tier 3 offender.

Failure to comply with sex offender registry requirements is a felony under Iowa law. Specific details of the alleged violation in the current case were not immediately available in the initial arrest report.

Dierksen has prior local contacts with law enforcement, including a 2024 arrest at the same Dubuque Law Enforcement Center Iowa Street address.

Additional information, including bond status or court dates, was not provided in the initial booking summary. This is a developing story based on public arrest and registry records.