CASCADE, Iowa — November 7, 2026 — The Cascade Police Department arrested Deven P. Manternach, 20, of Cascade, early Friday morning on a charge of violating Iowa’s sex offender registry law.

Manternach was arrested at 12:15 a.m. on Friday, November 7, 2026, and charged with violating Iowa Code 692A.104, a sex offender registry violation.

According to the arrest notice, Cascade officers learned Manternach had failed to report an “internet identifier” to the Jones County Sheriff, as required by state law. An internet identifier is an online username, email address, or similar account identifier that a registered sex offender must report to the sheriff.

Manternach was booked into the Jones County Jail.

No bond amount, court date, or report number was included in the information received. The notice does not state whether this is a first or subsequent registry violation; under Iowa law, that distinction determines whether the charge is an aggravated misdemeanor or a Class D felony, so no classification is listed here. No underlying conviction or other background information was included in the notice.

A criminal charge is merely an accusation, and the defendant is presumed innocent unless proven guilty.

Sources

• Cascade Police Department arrest notice, November 7, 2026.