A Waterloo man was sentenced Friday to five years in federal prison on child pornography charges.

Nicholas J. Perjak, 35, entered a guilty plea earlier this year on the charges, which include attempting to access with intent to view child porn and access with intent to view child porn.

Perjak’s 60-month prison sentence on four counts is to run concurrently, followed by 10 years of supervised release on each count, also to run concurrently. Perjak was also fined $400 and ordered to pay a $400 special assessment.

These charges arose from an investigation by the FBI’s New Orleans office in which IP addresses were captured when an individual, using a particular IP address, visited a website that contained links to child porn and subsequently clicked on a link that indicated, through the description of the link, that the link would lead to child porn.

An administrative subpoena issued as part of the investigation determined that one of the captured IP addresses was registered to Perjak at his prior residence in Waterloo. The investigation by the New Orleans office revealed that Perjak attempted to access child porn on this website in 2011, according to the U.S. Attorney’s Office.

Investigators conducted an interview with Perjak in December 2012, during which he provided a statement identifying a Dell laptop computer as the computer he primarily used for work and personal business.

Perjak admitted viewing child porn for approximately two years, prosecutors said, and admitted being addicted to child porn.

Perjak also admitted viewing child porn of girls aged between 10 and 16.

A forensic review of Perjak’s laptop computer revealed approximately 6,164 images of child porn.