A Henrietta man has pleaded guilty to production of child pornography. Mark Buechler pleaded guilty to sexually abusing two boys. Investigators searched Buechler's Henrietta home on two occasions. The FBI was contacted and a federal search warrant to examine digital and storage devices seized. Federal investigators found nearly 8,700 images of child pornography and two videos. Buechler will be sentenced to 20 years in prison in January for the state charges. He will be sentenced on federal charges in March. He faces 15 to 60 years in prison.