JACKSONVILLE, Fla. -

A 66-year-old Jacksonville man pleaded guilty Thursday to receiving images and videos depicting child pornography over the Internet.

Dwaine Idleman faces five to 20 years in federal prison and a potential life term of supervised release. A sentencing date has not yet been set.

Idleman was named in a criminal information charging him with the offense on Aug. 5.

According to court documents, a special agent with U.S. Immigration and Customs Enforcement's Homeland Security Investigations began an undercover operation to identify people using the Internet to receive and share child pornography. The agent identified a particular host computer using a particular Internet protocol address that was sharing images of child pornography on a file sharing network.

Further investigation revealed that the subscriber was Idleman in Jacksonville.

On June 28, 2012, special agents and other law enforcement officers executed a federal search warrant at the Idleman home in Jacksonville. Idleman was present and agreed to speak with the agents. He said, among other things, that he had come across pornography sites with people that were "too young" but that he "got out of it."

Idleman said he had a particular file sharing program, but did not keep it installed on his computer. When told that the agents knew that he was downloading child pornography files into his home and that he was sharing it back out of the home, Idleman said, "I'm not sharing it; I didn't think I was, and I didn't know that I was keeping it. I know I got a problem and if this escalates into an arrest, my life is over."

While at Idleman's home, the agents seized his laptop computer. Subsequent forensic analysis revealed that it contained at least four images and one video depicting child pornography. The analysis also showed Idleman downloaded child pornography on the morning of June 28, 2012, just before the arrival of law enforcement.