According to the arrest citation, Caskey admitted to drinking a half pint of whiskey and police found a small bottle of whiskey in his vest pocket, WAVE reported.
Police called UPS, and a supervisor provided another driver to finish the route, the television station reported..
In a statement obtained by WAVE, UPS acknowledged the incident.
“We are aware that a driver was charged Nov. 12 with operating a vehicle under the influence of alcohol, the statement said. “Safety is a core value at UPS and our drivers are trained to be among the safest on the road. We are working with authorities to investigate the situation. The driver has been removed from service pending resolution of the investigation.”