FARGO, N.D. (trfnews.i234.me) – A Fargo man is facing serious criminal charges after investigators say they uncovered child sexual abuse material and videos involving a dog.
According to Cass County court documents, Dennis John Olsen was charged following an investigation that began in April 2025. Authorities say the National Center for Missing and Exploited Children provided a tip that led to the case.
On May 19, 2025, a search warrant was executed at Olsen’s residence on University Drive South in Fargo. Investigators seized multiple electronic devices.
Court filings state that those devices contained images of adults engaged in sexual acts with children, including an infant. Authorities also reported finding videos of Olsen himself engaged in sexual acts with a canine.
Olsen is charged with felony possession of prohibited materials and misdemeanor deviate sexual act.
The case remains under investigation, and additional charges could be filed.
For more on how to report suspected exploitation of children, visit the National Center for Missing and Exploited Children.
I’m Chris Harper reporting for TRF News.
