A man from Florida was sentenced to 50 years in prison Monday after his girlfriend made two toddlers engage in "sexually explicit conduct" with each other for his "sexual gratification."

In September 2016, 38-year-old Roberto Oquendo was subjected to a traffic stop after officials received a tip that he had child pornography in his possession. During the checks, the officers found child pornographic images on his phone. Following this, the officers conducted a search at Oquendo’s home, which he shared with his girlfriend, Rose Beth Litzky, and found thousands of images and videos of two toddlers engaging in sexually explicit conduct. It was revealed that Litzky took photos of the toddlers while she lived in Florida and her boyfriend was in Virginia and sent them to him via social media apps.

During interrogation, Litzky admitted to the crime and said she took nude photos and videos of the children, who were under her care at the time, for Oquendo’s “sexual gratification.” The relationship between Litzky and the children was not known.

“Oquendo had used a social media application to engage in live chats with a co-conspirator, Rose Beth Litzky, during which Litzky engaged two female children in sexually explicit conduct for Oquendo’s viewing and sexual gratification. Oquendo created screenshots of the visual depictions involving the two girls,” the U.S. Department of Justice said in a press release.

Oquendo then moved to Florida to live with his girlfriend and started abusing the girls in person. He took more images and videos of the girls, some of which were “sadistic” in nature. Oquendo was found guilty of “conspiracy to produce child pornography and production of child pornography” earlier this year.

Meanwhile, Litzky, who was also convicted of the same charges earlier this month, was being held in Seminole County Jail without bond and was expected to be sentenced in October.

Representational image of a handcuffed man. SERGEI SUPINSKY/AFP/Getty Images