Investigators are looking into a note left by Tyler Robinson, the alleged shooter of Charlie Kirk, Utah Governor Spencer Cox said overnight.

Discord’s vice president, Jud Hoffman, shared on Friday that there were conversations between the suspect’s roommate and a friend after the incident. During these talks, the roommate was discussing the details of a note that the suspect had left in a different location.

Cox appeared to confirm the existence of a note in an interview with CNN’s Dana Bash on State of the Union, but indicated it was still under review.

“When I knew him and his family, they were like diehard Trump,” said the former classmate.

“When this happened, I was like… I don’t know what changed.”

According to voter registration records, Robinson is listed as an unaffiliated voter. However, Washington County’s clerk stated that he has never participated in voting.

The former classmate described Robinson as being “very, very big into gaming” and interested in video game design.

Robinson and his friends “would spend their lunches playing the card games and all that kind of stuff,” he said.