Police now say the driver, a middle-aged man, had suffered a medical episode, causing him to lose control of his vehicle.
Around 2:49 p.m. a truck plowed into the Nebraska United Methodist Foundation building at 100 West Fletcher Monday afternoon.
Police say the driver of a Dodge 4x4 pickup lost control and slammed into the main entrance of the building.
There were people inside working at the time but none of the workers were injured.
The driver of the truck was taken to the hospital with non life-threatening injuries.