Former Michigan football player Elysee Mbem-Bosse appears to have posted and deleted a series of troubling tweets, including an apparent threat against his former coach, Jim Harbaugh.

Screenshots of the tweets from Mbem-Bosse’s locked Twitter account surfaced on Reddit on Tuesday morning. It’s not a certainty that Mbem-Bosse made the posts himself, but there was a series of tweets referencing Harbaugh. Looks like this kid is super troubled. 

Mbem-Bosse was a linebacker with the Wolverines but was no longer listed on the team’s roster this spring. He appeared at both linebacker and on special teams for Michigan in 2017.