ENTERPRISE, Miss.--It was a tip from AOL that 35-year-old Joseph Stockman was e-mailing sexually explicit images of children that has landed him behind bars for at least four years. Atty. Gen. Jim Hood said Stockman pleaded guilty to one count of exploitation of a child this week in Clarke County court.

Hood said Stockman tried to fool authorities and had provided AOL with a phony ZIP code that made it look like he lived in Washington State. The cybertip originally had Spokane cops on the alert. When it was discovered he actually lived in Mississippi, that's when the Attorney Generals Internet Crimes Against Children Task Force got involved.

"I hope this will serve as a warning to others in our state who are doing the same thing," said Hood. Equipment used by his office can detect predators who are downloading child pornography and locate them using their IP (internet protocol) address.

"Our ICAC network is extensive and helps law enforcement throughout our state and nationwide in the fight against child pornography," he said.

Stockman will also have to pay $2,000 in fines and must serve five years post release supervision. The original sentence included $50,000 in fines ($48,000 suspended) and ten years in prison (six suspended).