A Sunday I-74 crash in Decatur County appears to have been caused by a rock through the truck's windshield.

The Decatur County Sheriff's Department says they received the call of the FedEx semicrash about 3 a.m. Sunday at the 127 mile marker of I-74. The semi was in the median and deputies found the driver in the truck semi-conscious with a significant head injury. There was also damage to the windshield.

The driver was flown by Stat Flight to St. Vincent's Hospital. The juvenile child of the driver was not injured.

Evidence indicates that a rock was thrown through the windshield of the semi and struck the driver in the head, rendering him unconscious.

Anyone with information is urged to contact the Decatur County Sheriff's Department at 812-663-8125.