Seminole Man Sentenced to 30 Years for Child Pornography Crimes

William Allen Southern received a 30-year prison sentence for possession and distribution of child sexual abuse material.

Published on Feb. 28, 2026

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A 31-year-old man from Seminole, Oklahoma has been sentenced to 30 years in prison for multiple counts related to child pornography, including aggravated possession of child sexual abuse material and distribution of obscene material. The investigation was led by the Oklahoma State Bureau of Investigation's Internet Crimes Against Children Task Force.

Why it matters

This case highlights the ongoing efforts by law enforcement to combat the growing problem of online child exploitation and the distribution of child sexual abuse material. It also underscores the serious penalties faced by those convicted of these crimes, which are a top priority for prosecutors and investigators seeking to protect vulnerable members of the public.

The details

William Allen Southern was sentenced to 35 years for aggravated possession of child sexual abuse material, 10 years for distributing obscene material, and 5 years for violating Oklahoma statute via computer. The sentences will run concurrently, with the last 5 years suspended, resulting in a 30-year prison term. Investigators found that Southern possessed over 200 videos depicting child sexual abuse and distributed over 100 videos via the messaging app Kik, which is considered a high-risk platform for child exploitation.

  • On February 24, 2026, Southern was sentenced in Seminole County District Court.
  • In late 2024, Southern was arrested twice in Seminole County.

The players

William Allen Southern

A 31-year-old man from Seminole, Oklahoma who was sentenced to 30 years in prison for child pornography crimes.

Douglas Parker

A chief investigator for District 22 who worked with the Oklahoma State Bureau of Investigation's Internet Crimes Against Children Task Force on the case.

Erik Johnson

The Seminole County District Attorney who expressed gratitude to investigators and prosecutors for their work on the case.

Oklahoma State Bureau of Investigation

The state law enforcement agency that led the Internet Crimes Against Children Task Force investigation into Southern.

National Center for Missing and Exploited Children

The organization that received CyberTipline reports about Southern's activities, which led to the investigation.

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What they’re saying

“Protecting our children across Oklahoma is a top priority. The OSBI Internet Crimes Against Children Task Force works around the clock to make sure these suspects are located and arrested. We appreciate our local law enforcement partners who assisted us throughout this investigation.”

— Hunter McKee, OSBI Spokesman (The Oklahoman)

“Their commitment to justice and protecting children in our communities is outstanding.”

— Erik Johnson, Seminole County District Attorney (The Oklahoman)

What’s next

The judge's sentencing order requires Southern to serve 85% of his 30-year sentence before being eligible for parole.

The takeaway

This case demonstrates the ongoing efforts by law enforcement and prosecutors to aggressively pursue and punish those who engage in the exploitation of children through the possession and distribution of child pornography, which remains a persistent and growing problem in Oklahoma and across the country.