The U.S. Department of Justice announced Wednesday that San Francisco resident Duane Charles Ackerman has been found guilty of production and possession of child pornography, and was sentenced to 15 years in prison.
Ackerman, 51, pleaded guilty in September 2016 to one count of production of production of pornography depicting minors in sexually explicit conduct, and one count of possessing child pornography.
Between June and August of 2015, Ackerman recorded prepubescent girls (under 12 years old) who were temporarily in his care. That same year Ackerman admitted to possessing a hard drive that contained more than 15,000 digital images and 800 video files depicting child pornography.
In addition to the prison term, Judge Vince Chhabria also ordered Ackerman to serve a 10-year period of supervised release.
Suspected child sexual exploitation or missing children may be reported to the National Center for Missing & Exploited Children, via its toll-free 24-hour hotline, 1-800-843-5678.
Read more criminal justice news on the Crime Ink page in print. Follow us on Twitter: @sfcrimeink