ST. LOUIS — A former dean at Washington University in St. Louis has pleaded guilty to federal child porn charges, and could face up to 20 years in prison.

The St. Louis Post-Dispatch reports that Justin Carroll pleaded guilty Monday to one count of access with intent to view child pornography. Sentencing is Oct. 26.

Carroll is a former dean of students and interim athletic director who spent 36 years at Washington University. He was indicted in January. He was placed on leave at the university Jan. 5 and formally retired in February.

Federal prosecutors say Carroll was among the participants in a group of people who shared child pornography online. He admitted viewing more than 15 child porn videos and more than 600 images of children engaged in sex acts.