The 46-year-old had hundreds of videos and images with underage children, police say.
Ronald Paul Gulli was convicted on 26 child porn counts.
Lucas King, 39, faces 10 counts of sexual exploitation of a minor.
Man's wife turned him in to police after finding images on computer.
Villegas must register as sex offender, serve 15-years probation after prison.
He faces 20 counts of sexual exploitation of a minor.
Case involves downloading and sharing child pornography on the Internet.
Mark Phillip Grimes pleaded guilty to two counts of sexual exploitation of a minor.
Child pornography was almost unheard of just 20 years ago.
A Tucson man was sentenced to nearly 25 years in prison Wednesday after pleading guilty to two counts of producing child pornography, officials said.
Police: 2 women left baby in car to shoplift
A Tucson man has been arrested by federal authorities who dismantled an extended network of child-pornography producers, officials say.
A 67-year-old Tucson man found with dozens of child pornography images on his computer was sentenced to six years in prison on Monday.
A Tucson man who was linked to downloading child pornography was arrested Thursday, police said.
Despite pleas for leniency from family members, friends and a defense attorney, a Tucson man was sentenced to five years in prison on charges that he viewed and exchanged child pornography on his computer.
Child porn nets man 10 years in prison
A man was arrested Thursday in connection with downloading child pornography, police said.
A former Tucson police officer caught with child pornography will spend the next decade in prison.
A Tucson man who pleaded guilty to child-pornography charges was sentenced Monday to five years in prison .
Tucson police are searching for a man wanted in connection with a child-porn investigation.