SPRINGFIELD, Mo. -

Three men from the Ozarks are headed to federal prison in separate child pornography cases.

Leland Wallace Crull, 44, of Bolivar, was sentenced by U.S. District Judge Greg Kays to 10 years without parole. Crull pleaded guilty in February. The court also sentenced Crull to spend the rest of his life on supervised release following his prison term.

Law enforcement investigators with the Southwest Missouri Cyber Crimes Task Force were investigating child pornography images and/or videos being shared on a peer-to-peer file-sharing network in April 2012. Crull’s computer was identified as sharing child pornography over the Internet. Officers executed a search warrant at Crull’s apartment on Aug. 9, 2012. He refused to answer the door and then tried to escape through the back of the apartment before officers caught him. Investigators seized Crull’s laptop computer, an external hard drive and his cellular phone, which contained hundreds of images and videos of child pornography.

Judge Kays sentenced Emilio R. Haro, 30, of Buffalo, to 20 years in federal prison without parole. Haro pleaded guilty on Dec. 19, 2013. The court also sentenced Haro to spend the rest of his life on supervised release following his prison term.

Law enforcement officers from two separate agencies independently identified Haro’s computer during their investigations into the sharing of child pornography over peer-to-peer file-sharing networks during the summer of 2012. Officers executed a search warrant at Haro’s residence and seized two laptop computers and an external hard drive, which contained hundreds of videos and images of child pornography.

Michael John Kinney, 40, of Nixa, pleaded guilty before U.S. Magistrate Judge David P Rush on to one count of producing child pornography and one count of possessing child pornography.

Kinney admitted that he used a minor victim to produce child pornography between 2007 and 2009. Kinney also admitted that he was in possession of child pornography in 2011.

Federal agents executed search warrants at Kinney’s home and business addresses and seized two laptop computers from his home. Investigators discovered 10 videos of child pornography that were made from a hidden camera in Kinney’s home and additional videos and images of child pornography, including children under the age of six engaged in acts of sexual intercourse with adults or other children.

Investigators also discovered numerous images of child erotica, including a child victim in various stages of undress. Kinney must forfeit those computers to the government.

Under the terms of Kinney’s plea agreement, the government will recommend a sentence of 15 years in federal prison without parole. A sentencing hearing will be scheduled later.

Kinney and Haro were prosecuted as part of Project Safe Childhood, a nationwide initiative launched in May 2006 by the Department of Justice to combat the growing epidemic of child sexual exploitation and abuse.