Federal prosecutors said an Ohio man made anonymous threats online to commit a mass shooting in a community in Illinois.

Ryan Gagnet, 22, of Maumee made the threats in early February using Omegle, a social media website that allows users to chat with random users, according to court filings.

“Hi. It’s going to be even more scary tomorrow. Because I’m going to be on the news. Commit a mass shooting. In shorewood Illoinis (sic),” Gagnet wrote, according to filings. Shorewood is a village of about 18,000 people, located about 40 miles southwest of Chicago.

The FBI learned of the threat Feb. 5 and tracked Gagnet down two days later. Gagnet, who attends Bowling Green State University, admitted that he made the comments and also told agents they may find disturbing things in the search histories on his electronic devices, the filings say.

A grand jury indicted him Wednesday, charging him with transmitting a threatening interstate communication.

Read more: Cleveland