BUFFALO, N.Y. (WIVB) -- A Lockport man pleaded guilty to distribution of child pornography after sending sexually explicit photos and videos to someone he believed to be a 13-year-old girl, the U.S. Attorney's Office announced Friday. Officials said 52-year-old Gerard Dzierzanowski communicated with an undercover officer posing as a 13-year-old on Whisper and Kik in February 2023. Dzierzanowski sent the officer videos depicting a prepubescent girl engaging in sexual activity with a man, as well as images of child pornography. The undercover officer repeatedly advised Dzierzanowski that she was 13 years old. He sent a sexually explicit video of himself to her, a 'selfie' of himself, and asked her to engage in sexual activity with him. Digital items were seized during a search warrant in August 2023 and were found to contain images and videos of child pornography. Distribution of child pornography carries a mandatory minimum penalty of five years in prison and a maximum of 20 years. Dzierzanowski faces a $250,000 fine if convicted. Sentencing has yet to be scheduled. Latest Local News Call 4 Action helps get reimbursement for Cattaraugus County man after lawnmower fire United Steel Workers says Sumitomo rejected plan to keep plant open Lockport man admits to distributing child pornography Sweet Home returns to glory in Class A Man pleads guilty for shooting in Tonawanda in September Kayleigh Hunter-Gasperini joined the News 4 team in 2024 as a Digital Video Producer. She is a graduate of Chatham University.