A Florida man was sentenced to 105 years in prison for sexually extorting young girls , according to a release from the FBI. Authorities believe more victims may be involved. Lucas Michael Chansler, 31, pleaded guilty to nine counts of producing child pornography. “According to court testimony, Chansler targeted 350 minor victims in 26 different states throughout the United States, three Canadian provinces, and the United Kingdom. One hundred and nine victims have been positively identified,” the release states. He would pretend to be a teenage boy and convince the teen girls to send him nude pictures and videos of them. Chansler would then demand more pictures and videos. And if the victims didn't comply, he threatened to send all of the pictures to the girl's family and friends. In several of the videos, the girls are seen crying and pleading with him to stop. During an interview, Chansler stated that he used social networking sites to meet girls who ranged in age from 13 to 18. He stated that he targeted underage girls because adult women were “too smart” to fall for his scheme. When he was arrested, the feds found more than 80,000 pictures of his victims on his computer. 350 girls were targeted. See the full list of Chansler's known screen names . “Sextortion is a growing threat both domestically and internationally ,” assistant director Joseph S. Campbell was quoted in the release. “The devastating impact of these crimes on the victims, their families, and friends cannot be ignored. The FBI is committed to using our resources and leveraging law enforcement partnerships around the world to identify and arrest these criminals. “This case serves as an example that children anywhere can be targeted for sextortion and that the FBI remains committed to stopping this cycle of victimization and holding the criminals accountable,” he continued.