Tragedy has struck the college football world on Saturday, as an FBS assistant coach has died following a heart attack.

The Louisiana Ragin’ Cajuns announced that OL coach D.J. Looney has died after suffering a heart attack during a team workout.

The school announced the news of Looney’s passing on Twitter. He was only 31 years old:

Per Sports Illustrated’s Ross Dellenger, Looney had ties to the SEC, serving as a graduate assistant to Dan Mullen at Mississippi State. He also graduated from Mississippi State, where he played offensive line, and spent time with Georgia as a grad assistant:

Our condolences go out to the Looney family after this horrible tragedy.