A LifeStar air ambulance responded to a life-threatening injury to a 47-year-old man at Home Depot, 1901 W. 31st St., Sunday afternoon, according to Douglas County Emergency dispatchers.
The 911 call came in about 3:15 p.m., but first responders had little information about the injury.
Emergency crews reported the man was unconscious with facial injuries.
"It is unknown how the injuries occurred," said Eve Tolefree, a Lawrence-Douglas County Fire Medical spokeswoman.
The man was taken to Kansas University Medical Center, but Tolefree said she could not provide any additional details.
Check LJWorld.com for updates as they become available.