Coy Gibbs, co-owner of Joe Gibbs Racing, son of team patriarch Joe Gibbs and father of NASCAR driver Ty Gibbs, has died at the age of 49, the racing team announced. “It is with great sorrow that Joe Gibbs Racing confirms that Coy Gibbs (co-owner) went to be with the Lord in his sleep last night. The family appreciates all the thoughts and prayers and asks for privacy at this time,” the team said via Twitter Sunday afternoon.

The cause of Coy Gibb’s death has not been announced, but he died just hours after his 20-year-old son, Ty Gibbs, won the NASCAR Xfinity Series championship race.Coy Gibbs spoke to the media about his son’s race Saturday, following a controversial week.”Watching it today, yeah, just to see his determination,” NASCAR quoted him as saying.

Coy Gibbs joined his father’s team after finishing a college football career at Stanford University, according to NASCAR. Coy and J.D. Gibbs both worked in the front office of Joe Gibbs Racing, and Coy Gibbs also raced for the team, according to NASCAR. The news of Coy Gibbs’ death left the NASCAR world stunned on the day of the final race of the season. A moment of silence was held his memory before the start of the race.