The relevant footage shows a man stepping off Mayfield's bus and walking up to Threadgill's 2005 Audi before he starts "fooling with the wheel," according to a Kingston, Tenn., Police Department report. The man "cut the tire stem," causing a flat tire for Threadgill "down the road," the report said.

Kingston Assistant Police Chief Gary Nelson on Thursday said that, during the bus-tour visit, Michael Mayfield had to return a pocket knife to the bus after setting off the courthouse's metal detector.

Mayfield campaign spokesman Joe Hendrix said the younger Mayfield admitted responsibility to his father, gave a statement to Kingston law enforcement and was released early Thursday morning.