LOUISVILLE, Ky. (WDRB) -- A worker died Thursday at McKesson Corp.'s massive Shepherdsville, Kentucky, warehouse dedicated to shipping COVID-19 vaccines.

The Bullitt County Coroner's Office confirmed a 26-year-old man was found in one of the chilling units at the facility at 170 Clermont Road around 6:15 a.m.

The coroner's office said the death is being investigated as an overdose.

Final determination is pending the results of toxicology tests.

McKesson’s senior manager of corporate public relations, David Matthews, released the following statement to WDRB News Thursday night:

We are saddened by the passing of a member of the team supporting our work at McKesson. Our hearts and thoughts go out to the worker’s family, friends and co-workers as they cope with this devastating loss. Out of respect for the privacy of the worker’s family, we will not be commenting further.

The Kentucky Labor Cabinet, which investigates workplace accidents, hasn't responded to inquiries from WDRB News. 

McKesson set up shop last fall in the warehouse to store and ship COVID-19 vaccines, some of which need to be stored at extremely cold temperatures. The warehouse was chosen for proximity to UPS' global air hub at Louisville Muhammad Ali International Airport. 

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