BOISE, Idaho (KLIX) – A 43 year old man living in Twin Falls will spend 25 years behind bars for possession and transport of child pornography.

According to U.S. Attorney Wendy Olson, Stephen Roy Walker was sentenced in U.S. District Court this week. Walker will also be required to register as a sex offender and serve 25 years on supervised release.

In 2014, Walker's apartment was searched by agents with the Department of Homeland Security. Authorities seized several computer devices and found images of child pornography on them.  Walker had three minor children living with him at the time.

“Three innocent children were rescued from a life of certain continued victimization thanks to the swift action of our special agents and partners involved in investigating this case,” said Steve Cagen, acting special agent in charge of HSI Seattle. “No child should be subject to this type of cruel punishment. Together, HSI and local law enforcement strive to assist traumatized youth by holding all child predators accountable for their deeds.”

He entered into a plea agreement in 2015 in which he admitted to transporting 462 images and 42 videos with child pornography from Texas to Idaho. The images also had 46 known victims. Walker also admitted that 78 of the images, including 4 videos, contained him engaged in sexually explicit conduct with one of the children living with him.

“The U.S. Attorney's Office will aggressively work with our local, state, and federal partners to stop the sexual exploitation of children,” said Olson.  “Those who continue to victimize children will be targeted and prosecuted.   Mr. Walker is being severely and appropriately punished for his criminal conduct.”

Walker was ordered to forfeit two laptop computers, an external hard drive, and a digital camera used in the commission of the charged offenses.