A Tucson man was sentenced to nearly 25 years in prison Wednesday after pleading guilty to two counts of producing child pornography, officials said.

U.S. District Judge Jennifer G. Zipps sentenced Lance Robert Fries, 43, to 297 months followed by a lifetime of supervised release,according to a news release from the U.S. Attorney's Office in Arizona.

Fries was arrested in early 2013 after U.S. Immigration and Customs Enforcement officials released details of an almost two-month-long international investigation dubbed "Operation Sunflower," in which 245 people were arrested and 123 victims were identified. Three of the arrests were in Arizona.

The investigation revealed that Fries sexually abused a toddler multiple times, and allowed the abuse to be watched on the Internet. Videos of the abuse were discovered in two separate child exploitation investigations involving others in Oregon and Florida.

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