Former Auburn University head football coach Tommy Tuberville’s campaign bus caught fire on an interstate in Northeast Alabama on Wednesday.

The DeKalb County Sheriff’s Office at 8:26 p.m. posted two pictures of the bus ablaze at the 227-mile marker of I-59 northbound.

Tuberville was not aboard the vehicle at the time.

The only occupant, a volunteer driving the bus, escaped unharmed. The exact cause of the fire was not immediately known.

The bus has been a staple of Tuberville’s “The People vs. The Swamp” campaign tour across Alabama during this election cycle.

In a statement to Yellowhammer News later in the evening, Tuberville campaign manager Paul Shashy said, “Coach Tuberville’s candidacy has obviously caught fire with voters…and our bus has, too. We are thankful that no one was hurt in the incident and for the remarkable first responders who assisted immediately. The fire occurred on a test drive shortly after maintenance.”

Tuberville will face former U.S. Attorney General Jeff Sessions on July 14 in Alabama’s Republican senatorial primary runoff. The GOP nominee will go on to face U.S. Senator Doug Jones (D-AL) in November.

Sean Ross is the editor of Yellowhammer News. You can follow him on Twitter @sean_yhn