THP said the truck then drove 2 to 3 miles down the interstate. According to the arrest report, Loudon County Sheriff Jimmy Davis was also driving down that stretch of I-40 when he saw the truck moving "all over the roadway" and crashing into other vehicles. Davis began following the truck and called 911 to tell officers where the truck was heading.

Davis said the truck then crashed into the center concrete barrier near the North Campbell Station Road exit. He got out of his vehicle and went up to the truck to check on the driver, and that's when the driver "came out of the vehicle fighting." According to the arrest report, the man hit Davis in the head and ribs, injuring him.

The man, identified as 37-year-old Erwin Lanza from Gatlinburg, was taken into custody. Officers said they smelled alcohol on him and said his speech was slurred before they took him to the University of Tennessee Medical Center.

At the hospital, a trooper conducted a sobriety test on Lanza and said he showed all the signs of being under the influence. Lanza refused a blood draw and was read his Miranda rights.

According to the arrest report, Lanza said he was driving around 100 mph down I-40 and said he didn't have his seatbelt on.

Several people were hurt in the I-40 crashes, including Lanza. The THP crash report showed two people inside the first car that was rear-ended suffered injuries. The driver of the second vehicle that was sideswiped also suffered injuries. A 1-year-old child was in the third vehicle that was hit, but they were not hurt.

Sheriff Davis suffered multiple broken ribs after the attack, according to the incident report.