A former substitute teacher at the Point Isabel Independent School District was sentenced Monday to 30 years in prison on over 20 counts of child pornography-related charges, court records show.

Leif Ericson Varnum secretly recorded kindergarten students while they used a classroom restroom with the door open, according to a statement from Cameron County District Attorney Luis V. Saenz.

“The children were unaware they were being recorded,” Saenz said.

Varnum was arrested in September 2024. According to Saenz, the case began when a USB camera was found in Varnum’s house that led to the discovery of “numerous videos and images depicting child sexual abuse material.”

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According to the indictment, Varnum was in possession of “visual material that contained 500 or more visual depictions of a child.”

Varnum pleaded guilty to charges of possession of child porn, possession of child porn involving children under the age of 10, sexual performance by a child under 14 years of age, and invasive visual recording. 

“This is a deeply disturbing case involving a breach of trust against some of our most vulnerable children,” Saenz said in a statement. “Let this serve as a clear message: anyone who exploits children will be aggressively prosecuted to the fullest extent of the law. Our office remains unwavering in its commitment to protecting children and holding offenders accountable."