A former Emory University professor who used the school’s Wi-Fi to download more than 8,000 images of child porn was sentenced to six and a half years in federal prison on Wednesday.

The Atlanta Journal-Constitution reported Kevin M. Sullivan, 61, was also fined $15,000 and will be placed under seven years of supervised release after he completes his sentence.

The Atlanta-based epidemiologist was arrested in June 2015 after he used his personal computer to access thousands of images on international servers—including one in Switzerland.

“Sullivan downloaded thousands of files depicting the sexual abuse of children,” US Attorney John Horn said. “He attempted to cover his tracks by using his personal computer on the internet system at Emory to download the images.”

In October 2014, Swiss officials seized a server that was hosting child pornography. Working with Emory University’s Information Technology Department, officials determined the server belonged to Sullivan, according to the Times Free Press.

A sweep of the 61-year-old’s office turned up illicit pictures on his personal computer and external hard drive. Authorities, who arrested Sullivan while on his home computer, found searched titles suggestive of child pornography but deleted most of the files.

The hard drive and personal computer had more than 8,000 explicit pictures. In court, prosecutors showed that someone at Emory University’s Rollins School of Public Health was using a wireless connection to access and download the files in question, according to WXIA.

Sullivan pleaded guilty to the charges against him in December.

Horn concluded, “As predators continue to try to develop new methods to feed and download child pornography, we will continue to find them and prosecute them.”

[Feature Photo: Dekalb County Jail]